I have a long hair cat who has massive clumps under his front and hind legs and all over his chest and neck. I can sometimes get him to hold still long enough to trim the ones on his neck but he gets extremely aggressive when i get anywhere near his belly or lower body where the clumping is the worst. It seems to be causing him pain and he's normally the chillest cat in the world but I can't get near the clumps to remove them. I need to find a way to nock him out so I can trim him up while he sleeps, but don't know what to use or how much. I'd also appreciate suggestions on how to remove them with as little irritation to him as possible, i typically use a small pair of scisors.