My kitchen has a double sink and the dishwasher drain pipe goes into the drain pipe of the sink closest to it. The kitchen sink is draining very slowly. When I use the dishwasher water backs up into both sinks and water remains in the dishwasher after the dishwasher finishes. Also, if the water is on a while in one sink it starts going up the drain into the other. I think the drain must have a build-up of soap scum and maybe mineral deposits since I haven't used it for a long time to put greasy stuff down it. Also, some of the pipes have what looks like whitish/greenish stuff on the outside which I think forms around a hole as a similar thing happened on the faucet and when I cleaned it up there was a hole until more of the stuff appeared to close the hole.
1. What is the safest non-toxic way to unclog the sink so it is no longer slow?
2. Can a plunger be used on the sink since the dishwasher drain is connected to the sink drain?
3. What is the stuff on the outside of the pipes?
Thanks in advance for all your help.
Debbie ____ Deborah Oney Blood Recall / Withdrawal - Creutzfeldt-Jakob Disease (CJD) http://members.aol.com/debbieoney/blood.htm CJD Watch - The International CJD Tracker http://www.fortunecity.com/healthclub/cpr/349/part1cjd.htm