Biofresh Storage bags - are they reusable?!

Biofresh Storage bags - are they reusable?

I just purchased these bags. They are zipper, plastic bags that you store your fruits and veggies in and they are suppose to extend the life of your produce by absorbing the gasses that encourage deterioration. These are natural gasses emitted by the fruits and veggies. Does anyone know if these bags are reusable, or can they only be used once? or, is it possible to use the same bag over for the same veggie, but not (for example) use the same bag for lettuce and then use it for apples?

I saw of TV they could be used up to 10 times. I do wash mine inbetween uses. If not I use them for the same product. I don't want my lettuce to smell like onions etc.