Usually I buy these from veterinarian retailers without fail. As a habitual rescuer, I have 16 animals in the house, a mix of dogs, cats, and a ferret. Any scent of these candles is AMAZING. We can’t ever use anything else remotely as strong as these, nothing exists!! Especially when my poor dad is working from home, these are a MUST BUY!!! They work in every room!! No particular scent works better than another – it’s just how you’d like the area to smell! Though, I am hoping this particular lavender and chamomile will have a calming effect on my highly anxious and deaf Aussie – but if not, oh well! At least it’ll smell amazing!! Even with dozens of fosters in and out, several batches of kittens using the litter box constantly, these candles have never failed!!