[bcrvman]

Any biological treatment needs some number of days to become useful. If you are an overnight camper, it will do nothing. If the magic number of days is less than what you stay put, then the active time is x-y, where x is the length of stay and y is the time needed to start working. I have not seen any product that can work for short stays up to 5 or 7 days. Longer stays will work as long as you are on a 10-day black cycle. Since the grey fill up in 2, 3, or 4 days there is no hope. Before you jump on me, have you done a double-blind test, or is this just a case of 'I keep the tigers away from the USA by snapping my fingers' what do you mean it doesn't work? Have you seen a tiger around here?