Got an email from Pet Circle about cat litter, scrolled down and noticed a coupon for $10 off $49 spend (worked on other things, doesn't need to be litter).
Might be targeted so check your emails! Coupon expires 14 days after you receive it.
They also sent another $10 coupon in an email today for their winter sale which expires tomorrow, doesn't look like you can stack but can always do two separate orders if you have both of them.
Also one thing to note, for the litter code at least (it looks unique), my one had a comma at the end which seemed to be a mistake as it kept telling me the code was invalid, so if your one also has one then just remove that and it should work.