For less than $99 a month (free shipping for US), our monthly maintenance program will send you everything you need to take proper care of your MSD (marine sanitation device) and keep it lasting for years.  Plus, since we batch our monthly doses in smaller quantities, you’ll avoid any HAZMAT charges.

The Crapzapper Monthly Maintenance kit (for unit sizes 112 gallons per day and smaller) includes:

  • 8 oz Formula 101™ bacteria.
  • 32 oz Formula 102™ bacteria enhancer and odorcontrol.
  • 16 oz non-bleach toilet bowl cleaner BWLZapper™.
  • 16 oz non-bleach all purpose cleaner APZapper™.
  • 2-lb. resealable pouch of calcium hypochlorite tablets.

Sign up now by filling out the form on this page, and we’ll contact you to understand your needs based on the size of your vessel.


Complete the form to learn more