Red Squirrel
No Lifer
Thats like a community of homes that don't use enough dish soap.
The soap in dishwashers is different. Mostly abrasives to increase the power washing effect. There is no way the tiny amount of soap and water used by dishwashers is able to fully envelop fats into micelles.
I actually use alot of dish soap because I assume my neighbors aren't. The stuff is cheap. Like $1.27 for a huge bottle.
Water facilities have been having increased problems with fat bergs. Yet people are cooking less at home. Its because of the lack of detergents, soaps, and surfactants going down the drain.
Yeah left over grease on dishes + adding soap to the mix is not really a big deal as it's a small amount, it's pooring grease directly in the drains that is. You can run hot water to keep the grease liquid long enough so it exits your own system, but it will eventually solidify downstream. Any soap you add might also be too dilute by the time unless you like pour a whole bottle down.
Personally I just throw grease in the trash while it's still hot and liquid and make sure it does not touch the garbage bag (not sure if it would melt it or not but I play it safe) then when it cools it just becomes a big chunk of hard grease.
Actually would be interesting to pour it outside in the snow, I'd have to try this. Might make for some good animal food too, for birds, stray cats etc.