Item # M-1358, Toss Tabs On Orr & Orr, Inc.

Holding tank systems: Drop 2 tablets through toilet opening into waste holding tank prior to use or after emptying tank. Flush toilet to add water to tank.
Portable toilets: Drop 2 tablets into waste holding tank through valve opening with a small amount of water to cover tank bottom.
Recirculating toilets: Drop 2-4 tablets into initial water charge. 12 Tabs per card.
Not intended for grey water holding tanks.