When I lived with my parents my cat layed down on some gunk and need a trimming. So, I had to use some pet clippers to remove it. I tried washing it out, but had no luck. Today my sister and her boyfriend moved in with a cat and two dogs. With so many pets, two cats, two dogs to take car of it gets really expensive if you need to take animals to get professionally groomed.
I learned if you have one cat who is know as a scaredy cat it may pee on the carpets. So make sure you keep them in different rooms. If you want to make grooming your pets easier check out this one speed pet trimmer.
Oster 78005-010 Golden A5 Single-Speed Clippers