Using Dawn on a regular basis is one of the best preventative measures around. For shower drains, use about 1/2 to 3/4 cup of Dawn straight out of the bottle, pour in and let it sit about 2-3 hours, then pour in a pot of boiling water. For drains that have a trap, mix 3/4 to 1 cup Dawn with enough hot water to have the mix pass the trap and again wait 2-3 hours and follow up with boiling water.
|