I have done this, there are intructions on how to make one with a computer fan to turbocharge it buried somewhere in this forum.but I prefer Ona pro blocks and Ona pro gel, even if they are a little expensive, I think they are worth it (and I am a tight ass).
PhatJay Reviewed by PhatJay on . DIY Ona Deoderizing Gel Not sure if this has been posted. Sorry if it's a double post. Making your own Ona gel crystals is simple. What you will need: 1. Fabreeze 2. Water Polymer Crystals (like SoilMoist or other brand) Add Fabreeze to the crystals. Done. Rating: 5