Our sump pit in the basement is starting to smell really bad and we need to know how to get rid of the odor??? It is not the septic pit--the line for the a/c drains into it and that is it. Would it be safe to put a little bleach in it or will that ruin the sump pump? It only drains every few weeks during the summer--I do pour the water from the dehumidifier in it. A friend said to just pour buckets of water down it to make it drain but that is a waste of good tap water! Any ideas would be appreciated!