cat & dog food & other items (Baltimore, MD)

I a senior on a fixed income. Lately caring for my pets has been very expensive. I have had my small dogs since I was working but the cat was left behind by a roommate. The cat needs a cat tree, litter, litter box with a lid, food, flea treatments and anything else to make her comfortable. My precious little doggies need large pee pads, bag & canned dog food (some dogs have chicken allergies), flea treatments, collars, leashes, bad weather wear and anything else to make them comfortable. Any help would be appreciated. Also, I'm looking for a stable drama free roommate(s) that can help care for my animals & plants when I'm not available.