[Rose]

I've been told by the people servicing our septic system to use only liquid detergents in both machines as powders can allegedly clump, but I've also heard this poo-pooed (no pun intended) by people with septic systems who only use powder and have had no problems. I definitely have switched to 1-ply TP after seeing clumps of the 2-ply stuff blocking the pipe from house to the D-box.