I have one thing to say never use this product, my mom bought it at walmart thinking she would save a couple bucks and all thanks to them they are dead. We put them on about 4 to 5 hours later Picasso was the first she was walking funny like dizzy like then Ralph was throwing up we called the vet imminently but it was after hours so we had to drive a hour and a half to get there. We were about to leave then Polly passed out we had to bring 3 in the other ones were fine they had to pit them down because the seizers were so bad they gave them something to help it didn’t help..snuggle bug didnt make itwhen we got home Betsy and mittsey were shaking and having siezers and Betsy waited until we got home and kissed my mom on the arm right after her seizure She died in her arms.. We have one cat left he seemed fine I hope he stays that way. My dog is fine. Never use these products. My mom will never forgive herself they were the best cats ever. Rip Picasso Polly Betsy snuggle bug baby girl Ralph and mittsey.. We all loved you so very much.