I always air out my stuff and I spray this stuff on my equipment and in my bag about once a month. It last long and smells great. It's great when I sit next to someone on the bench on in the locker room who smells horrible because I can just take a wiff of my own stuff. I spray it on everything from helmet to the inside of my skates.
Also I haven't had to wash my equipment, this is a lazy way of doing that.