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Those of us with septic tanks,
Would like to give a word of thanks,
For putting nothing in the pot,
That isn't guaranteed to rot.
Kleenex is bad, cigarettes too,
Feminine products are taboo,
No hair combings please - use the basket.
There's a very good reason why we ask it.
With your kind cooperation
We'll keep our tank in operation!
--Author Unknown
Actually, these are good rules to follow for any septic or sewer system.