Are you sure -- about your cat, I mean? We had exactly the same problem, and that stuff really doesn't work, at least it didn't on ours! It's up to you, though, of course.And here,carefully hidden,comes that piece of magic 'maurice.puttick@orange.fr'and so that no-one will notice it I'll bury it in a load of codswallop like this, you see? Really worth asking your local vet, though -- or is he 50 miles away?