We tried the Laxatone on Stella’s paw. She was so stubborn she would first try to shake it off and when that didn’t work, she would just wear it around all day letting in smear on the rug, the floor, the sofa, anywhere but IN her! I’d finally get tired of cleaning it off the rug, the floor, the sofa that I gave up. Now they both get a hairball formula catfood by Blue Indoor Health and hairballs are very infrequent.