Here are two "homebrew" holding tank solutions to reduce or eliminate holding tank odors.
1 c ammonia, 1 c PineSol, 1c fabric softener, ½ box baking soda (8 oz).
Put in gallon jug, fill with water. Use two cups for 50 gal holding tank.
Equal amounts Arm & Hammer soda and Borax. Do not use baking soda or soda with detergent in it. Use only pure soda, usually on the bottom shelf.
The DISCOVERY OWNERS ASSOCIATION, INC, was formed to promote the sharing of information and the camaraderie of fellow Discovery motorhome owners. Membership in the club is limited to owners of Fleetwood Discovery motorhomes.