My cat Herc is a male brown tabby and he is about 10 years of age. He has not been using the litter box latley. I have tried to change the brand of the litter I was using and it still has not helped PLEASE HELP!

Cats will sometimes have an aversion to the litterbox if they have a urinary tract infection - this makes it painful to urinate and they associate the litterbox with pain. Your best bet is to take your cat to the vet.