I've been there with my cats wall only once. My first cat scratched his only striking amount at the places where I have applied the remedy after a week dissolved at these points a striking number of hair. My andedre cat came out of the scratch does not get out - and then got of course rash - even weeks later a kind of corridor on IHRM back was to recognize exactly where I have applied the remedy. I felt this as cruelty and my cats will not do that again. There I was so sorry.