17+ year old Maytag dryer
Try at LEAST 25 years. This model ceased in 1984, when the 12 series came out. The washer is either a 610 (one speed motor, tall tub) or a 710 (2 speed, tall tub). Both models have the same amount of buttons and button arrangement. The dryer is either a 210 or 310.
I would ask details about what and where the cat had it's "accident." It would probably only require a little disassembling and cleaning. It depends how mechanical you are and how much a person enjoys disassembling and cleaning. Personally, I get a kick out of tearing, cleaning, and re-assembling. Pretty much taking a piece of shit and turning it into like new (or better than new) condition. Nothing gives me more satisfaction.