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Selleys Rapid Mould Killer 750ml $5 + Delivery ($0 with OnePass/ C&C/ in-Store) @ Bunnings

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Selleys Rapid Mould Killer 750ml $5 + Delivery ($0 with OnePass/ C&C/ in-Store) @ Bunnings
Go to Deal
hamza23 on 15/06/2026 - 17:15 bunnings.com.au (3506 clicks)
Last edited 15/06/2026 - 23:14 by 1 other user

Free delivery with OnePass.
Down from $7, original price $9. Thanks to Bargain Radar.

Very good price for 750ml, usually this is as cheap as it gets for the smaller 500ml on special at Coles/Woolworths.

Selleys Rapid Mould Killer is a fast-acting mould killer that destroys mould in 30 seconds. Ideal for use in bathrooms, laundries and toilets, it leaves tiles and grout sparkling clean. It can also be used on rubber bath mats, laundry surfaces and exterior mould-affected areas.

*Escherichia Coli, Staphylococcus Aureus, Pseudomonas Aeruginosa, Enterococcus Hirae

*On some matt finish tiles or in hard water areas, staining may occur. Patch test first on an inconspicuous area. If staining occurs, rinse well and apply hydrogen peroxide to the affected area.

Home & Garden Selleys

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Comments

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Search through all the comments in this post.
  • conant on 15/06/2026 - 17:31

    I have used this and it was really good. Then I filled the spray bottle with bleach… Same…

    https://www.bunnings.com.au/glitz-2l-premium-bleach_p4470017

    • 8
    • Mild October on 15/06/2026 - 18:27

      Do I need to dilute the bleach?

      • 1
      • ozhunter68 on 15/06/2026 - 19:38

        Depends on brand, purpose required, and how sensitive your lungs are too lol.

        • 1
      • Hugh G Rection on 15/06/2026 - 19:42

        full send with full power

        • 10
        • Blitzfx on 15/06/2026 - 20:36

          And still be cheaper / L

          • 0
    • Tuttorix on 16/06/2026 - 10:36

      Unsure if true, but people say that bleach only makes the mould invisible, it doesn’t actually kill them apparently.

      • 3
    • Murkymerv on 16/06/2026 - 11:52

      A mixture of white vinegar and bi-carb soda is an excellent, natural, and eco-friendly mould killer in Australia. Vinegar is acidic and proven to kill up to 82% of mould species . Try this instead ⁉️

      • 1
      • NigelTufnel on 16/06/2026 - 12:04

        Except, by mixing the vinegar (acid) with the bi-carb (basic), you're reducing its acidic effectiveness. It makes a nice fizzy effect, but that's about it. Better to use separately, vinegar to kill, then bi-carb to neutralise again.

        • 6
  • GreenPlastic on 15/06/2026 - 17:50

    I love this stuff and use it in our showers.

    You can get cheaper bleach, but it’s usually weaker when you compare the concentrations of sodium hydroxide and sodium hypochlorite between them and this product.

    • 2
    • bamzero on 15/06/2026 - 18:05

      It's pretty close at 9g/L vs 10.5g/L and 42g/L vs 53g/L and only 15% of the cost
      (or as I just saw conant pointed out above even less at under 13% of the cost)

      • 1
      • tunzafun001 on 15/06/2026 - 22:09

        This is one of the best bang for buck bleaches you can get. Some of the expensive bleaches are trash.

        As for "mould killer", Coles brand has the same strength as Selleys (last one I bought was $4).

        But the CRUCIAL thing is age. High concentrated bleach precipitates to the bottom and loses strength. Bleach has a date stamp (and the shelf filler kids don't rotate stock). Stuff at the back is often older.

        • 2
    • ifreddo on 15/06/2026 - 20:00

      Do you use it for mould or general shower cleaning?

      • 0
      • supperman on 15/06/2026 - 23:12

        I shower and clean myself with it

        • 6
        • eciuj on 16/06/2026 - 10:25

          First the shower cracks, then your crack.

          • 1
      • YoursTruly on 15/06/2026 - 18:15

        If you are looking at these two documents to see if one product can substitute for the other, yes, they are fundamentally identical in their heavy-lifting chemistry. Selleys Rapid Mould Killer relies on a formula of ~4.2% sodium hypochlorite stabilized by a touch of caustic sodium hydroxide and boosted by foaming amine-oxide surfactants—which is precisely the exact chemical footprint spelled out to the decimal point on the Power Force Mould Away bottle. The Power Force retail label simply adds a touch of eucalyptus oil to mask the heavy bleach scent.

        When it comes to the physics of how these two sprays actually behave on your bathroom walls—specifically their ability to foam up and cling to vertical surfaces rather than immediately running down the drain—Selleys Rapid Mould Killer takes the win. Here is why there is a noticeable difference in how they stick:

        The Secret is in the Surfactants
        Take another look at Section 3 of the Selleys SDS. It explicitly lists two specific chemical entities:

        1-Dodecanamine, N,N-dimethyl-, N-oxide
        1-Tetradecanamine, N,N-dimethyl-, N-oxide

        These belong to a class of specialized surfactants (amine oxides) that are highly stable in high-pH bleach solutions. Their primary job isn't just cleaning; they act as powerful foaming and thickening agents. When shot through a trigger spray, they create a dense, sudsy foam that physically traps the bleach against vertical tiles and grout lines, giving the chemical time to work its way into the mold roots.

        Why Power Force Falls Short on "Cling"
        If you look at the Power Force Mould Away retail label, it lists Alkaline Salts instead.

        The Role of Salts: Alkaline salts (like sodium carbonate or silicate) are fantastic for maintaining a high pH so the bleach doesn't degrade in the bottle, but they do not create foam or viscosity.

        The Runoff Factor: Without those specific amine-oxide surfactants found in the Selleys formula, Power Force behaves much more like a thin, watery liquid. When you spray it onto a vertical shower wall, it tends to run down the face of the tile much faster, meaning you have to keep reapplying it to keep the mold covered.

        Summary
        Selleys Rapid Mould Killer: Formulated to foam and stick, making it much better for vertical shower walls, grout lines, and inverted surfaces where you need the bleach to stay put.

        Power Force Mould Away: Watery and prone to running off vertical surfaces quickly. It works perfectly fine on flat, horizontal surfaces (like a laundry bench or the bottom of a bath), but you will find yourself fighting gravity if you try to use it on walls.

        Wouldn't ecualpytus oil stick?

        It's a really intuitive thought—oils are greasy and viscous, so you’d think adding one would help a liquid cling. However, when it comes to spray cleaners, eucalyptus oil actually does the exact opposite. Instead of helping it stick, the eucalyptus oil makes it even more watery.
        While cooking oils (like olive oil) are thick, essential oils like eucalyptus are structurally more like a thin solvent (similar to tea tree oil or mineral turps). It doesn't add any "stickiness" or thickness to the water; it just floats through the solution to provide that fresh, clean scent and help cut through light surface oils.Without a dedicated surfactant network to hold it up, any liquid sprayed onto a smooth vertical tile is at the mercy of gravity. Because the Power Force formula lacks those heavy amine-oxide "cling" molecules found in the Selleys formula, the water, bleach, and eucalyptus oil will just run straight down the tile in tiny streams.

        That’s one lonnnnnnggggg commmmmmment!

        Thanks…Ai?

        Not going to read that.

        • 30
        • mysterybox on 15/06/2026 - 18:46

          Ask AI to read it and summarise to two sentence 🙂

          • 6
        • ak47wong on 15/06/2026 - 19:02

          And you had to quote the whole thing?

          • 6
          • YoursTruly on 15/06/2026 - 19:06

            @ak47wong:

            And you had to quote the whole thing?

            for context - lest you forget.

            • 2
        • PhoenixIsRight on 15/06/2026 - 20:09

          I love it when AI talks clean to me.

          • 3
        • expertreader on 15/06/2026 - 20:17

          Selley’s had sticking agent do stuff doesn’t run off. Normal bleach doesn’t so it will run off.

          Moral of the story- mix a squirt of dish washing liquid with bleach. And you got winner.

          • 1
          • Nom on 15/06/2026 - 22:30

            @expertreader: Be very careful mixing things with bleach - the wrong combination can give off highly toxic chlorine gas.

            • 6
            • Horacio on 15/06/2026 - 23:19

              @Nom: this

              • 0
            • expertreader on 16/06/2026 - 09:10

              @Nom: Agreed. Already looked through ingredients and checked to confirm if Bleach will react.

              • 0
        • mshanann on 16/06/2026 - 11:13

          I imagine not a single person who voted negative had a clue either the difference between the two products, yet still read the comment in full because it was informative. 'Oh someone posted something from AI explaining the difference between the chemical makeup of the two products having obtained the safety data sheets for each product' - lets vote negative because we always vote negative on ozbargain when someone posts something from AI. Did the comment hurt you? Or was it too long. It clearly wasn't written as if I authored it personally.

          • 0
  • perhaps on 15/06/2026 - 18:11

    I buy these once just for the spray bottle and then refill with bottled bleach (think its like $2-3 for a 2L bottle). Much cheaper and works just as well.

    • 4
  • R4 on 15/06/2026 - 18:12

    This stuff is great but it stinks like crazy. Make sure you have plenty of ventilation

    • 4
  • Jolakot on 15/06/2026 - 18:31

    Safe to use on cornices?

    • 0
    • benzino on 16/06/2026 - 08:08

      Safe? Not sure. Have I used it to remove mould from cornices, absolutely. Did it work, yes! Did it damage, not that I could see.

      • 1
  • AuQld on 15/06/2026 - 18:38

    This is awesome for mould, but the Exonic is better and way cheaper so go figure

    • 0
  • qwerty40777 on 15/06/2026 - 18:41

    Does this stuff work on mould that is in silicone?

    • 0
    • backupper1 on 15/06/2026 - 18:47

      no, had the same problem so I purchased a uv lamp, put that in shower overnight and the ingrown mould went away in a few days.
      this is just highly concentrated bleach so using bleach gave same results.

      • 3
      • Techefy on 15/06/2026 - 18:59

        Is that for black mould in grout in the shower and around sink? If so can you pls explain more?

        • 0
        • backupper1 on 15/06/2026 - 20:34

          i did this for the ingrown dark mold in shower silicone, didn't try it for the one you described.

          • 0
          • Techefy on 16/06/2026 - 09:41

            @backupper1: thanks, I think that is what I wanted as well, used wrong words

            • 0
      • Moose Knuckles on 15/06/2026 - 20:01

        What UV lamp did you purchase?

        • 1
        • backupper1 on 15/06/2026 - 20:40

          simple setup of a 5w UV bulb in an E27 table lamp,
          far better than the disgusting fumes given out by this concentrated bleach.

          • 1
          • edrift on 15/06/2026 - 21:48

            @backupper1: It gives out ozone though…
            I bought two 30w uvc bulbs for the same purpose.

            Smells nice and sweet (don't smell it!).

            Kills everything in the room

            • 0
            • backupper1 on 16/06/2026 - 06:52

              @edrift: i connected wifi switch to UV lamp setup, closed the bathroom main door and then controlled the lamp using phone to avoid any strong uv, only this way the ingrown mould died(that had survived this spray bottle).

              • 1
          • outlander on 15/06/2026 - 22:55

            @backupper1: can you still see?

            • 0
          • pichxlonco on 16/06/2026 - 07:45

            @backupper1: This is really interesting, thanks for sharing! Does it need to be a fancy professional hospital grade uv light bulb? Or just a cheap one on AliExpress for$6 would be enough?

            I have some wifi power adaptors so can maybe make it work for a couple of hours intermittently, but unsure if it'll make the whole house smell?

            • 0
            • backupper1 on 16/06/2026 - 08:40

              @pichxlonco: Any decent actual uv bulb would do(not sure of AliExpress stuff if really a UV bulb or not). I left the exhaust fan on with the bathroom door closed so you'll need to provide for ventilation for your application.

              • 2
      • shmahoo on 16/06/2026 - 14:01

        Please be careful if using UV lamps - exposure can be very damaging for skin/eyes, in a very short amount of time

        • 1
    • NigelTufnel on 15/06/2026 - 19:14

      My way is to roll up some paper towel drenched in bleach on the silicone overnight.
      Mould is gone by the morning after a rinse.

      • 9
      • qwerty40777 on 15/06/2026 - 20:09

        Thanks will give this a try

        • 1
      • johnnytran on 15/06/2026 - 22:19

        I tried this once after seeing it recommended online. It ruined my silicon (that area eventually started peeling). I used beta tilecare's mould rid from bunnings.

        • 2
        • NigelTufnel on 16/06/2026 - 07:16

          Interesting. Done it a couple of times and haven't had issues. But it is pretty strong, so I guess less is more.

          • 0
    • kbw on 15/06/2026 - 22:52

      People will tell you yes but the truth is nothing short of blasting it with ionizing radiation will kill mould that's penetrated a porous surface. They think bleach does but the roots are still there, and it'll grow back in time. You need to re apply fresh silicone.

      • 4
  • Techefy on 15/06/2026 - 19:00

    Will this work for black mould in grout in the shower and around sink?

    • 1
    • yippy on 15/06/2026 - 19:09

      Yes, it will work for that, for the more stubborn bits I use a grout brush to give it a scrub after I've left the mould killer on for a few minutes.

      • 3
      • Techefy on 15/06/2026 - 19:29

        Thanks, going to order one then

        • 1
    • xaykogeki on 15/06/2026 - 19:23

      It does but not 100%. Just have to leave it for 10-15 mintues and do a second time too.

      • 2
      • Techefy on 15/06/2026 - 19:30

        Thanks, going to order one then

        • 0
  • eddyah on 15/06/2026 - 19:06

    Mouldy? Old?

    I gotta get something to eat!

    • 6
  • hamzie on 15/06/2026 - 19:48

    Does this work for serratia (the red mould looking thing)

    • 0
    • yippy on 15/06/2026 - 21:08

      Yes, it works for that too.

      • 1
      • hamzie on 15/06/2026 - 23:55

        Sold
        Thx

        • 0
  • MuscleRulz on 15/06/2026 - 21:01

    Thanks OP! Bought one from Bunnings using OnePass 👍

    • 2
  • Perry123 on 15/06/2026 - 21:17

    I have a cat, could the smell be toxic for him?

    • 0
    • DoctorCalculon on 15/06/2026 - 23:10

      Most likely. The fumes from this one is unbearable, even with all my windows open for good airflow.

      • 1
      • Perry123 on 16/06/2026 - 05:04

        Thank you for sharing this. I will try some natural remedies first and if that doesn't work then something non toxic for pets as my cat is always following me around supervising my activities:)

        • 0
        • Sydney2K on 16/06/2026 - 16:09

          Nosy cat- bet making the bed is a whole lot more effort than it should be. :) Perhaps a feline pet date at a friend's home for a day or two might be the ticket.

          • 0
    • Water Bearer on 16/06/2026 - 16:42

      I've killed my wife using mould killer smell. So if you want to kill your cat, I highly recommend it!

      • 0
  • ULT on 15/06/2026 - 21:25

    just in time, winter has set in and my master bathrooms window sill rubber parts are growing mould. Happens every winter cos the windows get all frosty then it melts and the water settles on the rubber seals and the mould is primed and ready to propagate in those conditions lol usually clean just once and it goes away all winter

    • 1
  • Oliver on 15/06/2026 - 21:55

    The only thing thats ever worked for our old mouldy house is this
    https://www.woolworths.com.au/shop/productdetails/368419/ozk…

    We tried bleach - no good.
    We tried vinegar - good but had to keep doing it and mould kept coming back

    This ozkleen thing, we used monthly, 3 months in a row and havent had any mould come back yet. It's not bleach based. Its bioflavinoids. I was dubious at first but it's done a great job.

    • 4
    • dangerdanger on 15/06/2026 - 22:59

      Thanks, I might give this one a go!

      • 0
    • Sydney2K on 16/06/2026 - 16:10

      I might give it a try as well. What treatment worked well for you?

      • 0
  • DoctorCalculon on 15/06/2026 - 23:11

    What about this one? https://www.amazon.com.au/dp/B0778MQ4NM

    Almost the same concentration of the active ingredients, but low fumes.

    This product does go on sale every now and then. Keep an eye on 3C.

    • 1
    • bamzero on 16/06/2026 - 12:41

      Is it really though? Same ingredients, I would assume same fumes. Aside from saying low fumes in the title, doesn't claim that anywhere on the packaging (or any reviews saying less fumes than any other)

      • 0
  • StuBalls on 16/06/2026 - 09:23

    Will this work for the mould on my bread?

    • 0
  • Carbro on 16/06/2026 - 09:55

    I get that the bleach is cheaper but the syrupy consistency of this product also helps the bleach stick to surfaces better and easier to work into removing mould.

    • 0
  • kaybrr on 16/06/2026 - 10:39

    When it came to removing mould all products seem to just be 99% bleach.

    To stop the actual mould rather than bleaching it I purchased this https://www.bunnings.com.au/concrobium-946ml-mould-control-c…
    and the mould actually dies and it worked on walls without damaging them

    • 1
    • NigelTufnel on 16/06/2026 - 11:52

      Man… those reviews are incredibly mixed.

      • 0
      • kaybrr on 16/06/2026 - 12:37

        Yeah, they are, I read the bad reviews and they are from people who thought it would bleach the mould.

        Bleach is excellent at making mould look gone.
        Concrobium is better at targeting mould growth and spores, especially on porous surfaces. It also leaves behind salts that inhibit more mould growth. I especially like it on plaster, walls, wood etc as it wont damage it.

        • 0
        • Ezekiel2320 on 16/06/2026 - 12:56

          ""Concrobium"" also known as trisodium phosphate works in the exact same fashion as sodium hypochlorite (bleach) which also dries into salt.

          If you prefer your Nu-Salt to iodized table salt you can buy it dry as well

          https://www.bunnings.com.au/tricleanium-1kg-all-purpose-clea…

          • -1
        • expertreader on 18/06/2026 - 14:17

          @kaybrr the active ingredient is Alkaline salts - so bicarb soda?

          • -1
          • kaybrr on 18/06/2026 - 14:47

            @expertreader: Yeah, just go to your kitchen cupboard and just dust it around your mold and you are set

            • 0
  • REDRUM on 16/06/2026 - 10:46

    It's funny that people buy this for the bottle, personally (maybe I'm just unlucky) I stopped buying it due to the sprayer failing… and often before I used half of the original bottle.

    • 2
    • frozenkuku on 16/06/2026 - 12:24

      yeah exactly the same experience, i still have half bottle full but cannot spray out anymore

      • 0
    • Water Bearer on 16/06/2026 - 16:47

      I usually top it it up when it gets half way with others. I always have a few around in other bathroom and places, that have been used. The spray bottles are terrible unless you hold it up straight.

      • 0
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