how do you clean your OS air diffuser?

Hey folks, I was curious how you cleaned your OS air diffuser (If you have one). Currently, I scrub the hell out of it with soapy water, rinse it, soak it in more soapy water for a few hours, rinse it again, then I soak it in a mixture of 1/3 tap water and 2/3 H2o2 (The strong stuff).

The cost of using the H2o2 is getting pretty expensive, so hopefully you RIU members can point me in the direction of a cheaper solution.

I use my OS air diffusers to brew up compost teas, but I assume you hydro growers know how to get/keep things sterile so I am posting this here.

3% h2o2 is just fine and I get mine for 88 cents a quart.

boil them for 20 min