Most of what goes into the grey tank is dishwater with liquid Dawn detergent. When I drain the tank I am getting an enormous amount of suds, so much so that it fills up the dump station line. Has an...
We use Dr. Bronners soap instead of dish soap. It is more expensive (you get it at organic-type markets or Trader Joes) but it does not make suds. A few drops will wash the dishes. We also use it for showering, diluted.