The Item in the center of this picture is the air gap   
The blue green item on the right is what The air gap looks like from under the sink.
Two hoses hook up to the ends of this air gap the small one is connected to the dishwasher the larger is connected to your garbage disposal. The large hose that ties into the garbage disposal gets full of sludge from the food you put into the disposal and it rots there. 

Also if you get water coming out of the air gap. This also means the hose needs to be cleaned out.

Bio-Clean
Have slow drains? clean them up with Bio-Clean, The Natural Drain Cleaner with the friendly enzyme www.masterplumber.net/bio-clean.htm

RootX
Have tree root problems? get rid of them with Rootx, the tree root killer
www.masterplumber.net/rootx.htm

The Wonder Shower
Tired of that small shower head, that you have to bend under to get wet? Check out this great new adjustable shower arm and large head.
www.masterplumber.net/the_wonder_shower.htm

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