I dissagree. Reuse every thing that you can. not good to wast shit.
I know it's not that pricy to buy a new bag. but it's no that difficult to spend the evening cleaning the old one.

I really can't see how it would make any diffence to yeaild. But If I was running a grow shop and was looking to take you $ I would tell that.

I don't know, just seems wastfull to me.