The vet told me (after Bastet had an accident and tore her claw to make it bleed) is (once you have cleaned it mind you) to get a clean bar of soap and rub the claw across it. You don't need to put too much pressure on it. The soap needs to be unscented and have lots of lanolin in it. This not only stops the bleeding and infection from getting in but cats hate licking it!

It worked a treat and didn't cost me a lot in vet bills either.

I have Bastet's *claw soap* in her first aid kit in case she ever does it again.