"dean" wrote in message
oups.com...
What cleaning agents to people prefer to use to clean the bowls of
their toilets, if they own septic systems?


I just use Comet powder and a brush.

Remember, your septic tank holds hundred(s) of gallons of water, and every
time you take a dump the bacteria are replenished. So unless you're
planning on pouring a gallon of bleach down the drain, there's not much you
can do to permanently affect the tank or drain field. Just, as always,
follow the manufacturer's instructions.