I think it works but it does not make up for good cleaning. I start by running a empty load with borax or baking soda then washing all my clothes in the same. I air dry them and then I place them in one of the vacume bags that you use on blankets. I also try and have some leaves from my lease to place in with them.
I do not put these on till I get to my lease and away from the truck. I also have snacks like apples that I eat and water. Works for me.
Good luck
Rick