Where to Buy Sticks for Reed Diffuser?

I am looking to buy some sticks to replace those in my current reed diffusers as they are already pretty saturated and not throwing the scent anymore while I still have a lot of liquid left. I have read that the rattan sticks are better for absorption and scent throw so would prefer rattan over fibre sticks.

Can anyone suggest where I can buy some online or in Victoria?

I have checked out eBay and Amazon but have been put off by some of the reviews saying that the sticks were duds and do not absorb at all. I guess it is hard to know until the product arrives and you actually use it! Anyone has any recommendations or have tried and tested/bought some themselves before?