I most certainly will let everybody know if it works. I'll definately be picking up atleast one bottle to try/ test. It'd be kind of hard to see if it works just in the tubs but i figured i'd do an experiment with a 2 pieces of bread or some food items left out. One sprayed with the bioshield which is supposed to last for atleast 3 months and one without for the control. If it works theoretically the food item w/ out bioshield should grow mold before the other one. any other suggestions on how to test it, and i will. thanks though.