I make wine, prickly pear. The CO2 is an added advantage. Constant supply of co2 for 6 months and I get to drink the left overs. You guys spending money on co2 should think about it.
This may sound funny, but go to the pet store and buy some mite spray for birds. If your plants arent in full bud it great. Safe for birds and disapates in 24 hrs