robsouth wrote:
Beverley&Ken wrote:
There are two groups here. We in the one that use only water in the black tank, a few gallons after dumping and plenty of water when flushing. Never any problems and never spent money on chemicals.
Beverley and Ken
x2. No chemicals in 20+ years. We use 1 cup Calgon water softener and 1 cup cheap liquid laundry detergent in the black tank when we set up. Use lots of water for each flush. Dump and rinse at end of stay. Add about 2-3 gallons of water to leave in tank. Done.
Aren't Calgon and laundry detergent chemicals?