Is this an old wives tale or true? Do coffee grounds down your sink really help clean it out of fat and grime?
I'm afraid it might aggravate the problem.
"Sink stoppages are usually caused by liquid fats, emulsified by warm dishwater and carried through the pipes. The water cools as it proceeds to the main sewer and leaves the fatty deposits along the way. A film of grease forms on the pipe wall, then another and another. Coffee grounds and bits of food add to this accumulation layer until the pipe becomes impassible.
"Pour excess grease into a tin can and throw it out with the garbage, not down the sink drain. When using a food disposer, always let sufficient cold water run to carry the particles down and into the main line to prevent buildup in the smaller waste lines."
If you really want to have a nice flower garden take your coffee grounds and kitchen vegetable wastes and combine them in a compost pile. Then have your children dig in an area approved by you for worms and add the worms to your compost pile. What they leave you will really improve your flower output as well as getting rid of your kitchen waste. Worms love coffee grounds.