This stuff is amazing! I have two cats that don’t get on….and I mean they hated eachother! They would tolerate eachother to a point but would end up fighting. After one of them became unwell and had to go back and forth to the vets that just made things worse. They would fight constantly to the point where I had to separate them. Once my male cat was better and I didn’t need to worry about him getting injured I tried reintroducing them but it was not successful! Before pet remedy I had tried feliway normal diffusers and feliway friends and it made no difference at all and was really expensive. I tried the pet remedy diffusers as I had used the spray when my cat was unwell and it really settled him at the vets. Within a few days of the diffusers being in I noticed a massive difference in both their behaviours. My male cat had stopped stalking and chasing the female (he was the bully) and my female seemed a lot more chilled out. Within a week all doors were open and no fighting. Couldn’t have asked for a better result! I even noticed the difference in their behaviour when it ran out as they started scrapping again, so I will keep buying! Bought the pet remedy spray which does work but I find the diffuser more effective as it circulates the full house. I have a diffuser on each floor and despite other reviews, you hardly notice the smell. Maybe only once in a while when you walk past the diffuser and even then it’s very faint. The spray does smell quite strong in comparison. Either way I’ve got two happy chilled out cats and I will continue to buy this product. Thank you pet remedy!