Tom, could you please again post the method you use for cleaning drains? I remember a mixture of bleach followed by boiling water, but not the details. Thanks...

Most bad shower and lavatory smells are caused by rotting hair matted with grease from the soap. Try this. Tonight before you go to bed pour 1/2" gallon of bleach down the drain. Next morning flush the bleach out with, (and this is important) two large pans of boiling water. The bleach will start to dissolve the hair and the boiling water will melt the grease and flush the mess out. Good luck, Tom

Tom, thanks for the quick reply... will copy response for my records.

Kitchen drain smells-
My kitchen drain has a terrible odour coming from it. I have put vinagar followed by hot water down it numerous times. THe odour sometimes goes away but comes back in a few days. Can you help to pinpoint the problem? Do you have any solutions?

Spider, Did you read my reply to Shader? Have you tried it? Cheers, Tom