The Quick-Clear valve is a gold, threaded knob located on the back of your trap. It is intended for use with the black and gold, L-shaped adapter included in the box with your Mosquito Magnet. The cartridges should be used in the Quick-Clear valve every two propane tank changes, so this three-pack will last you for several propane tanks. Catalyzing propane the way the Mosquito Magnet does naturally causes some residue resulting from fuel use, so it's a good idea to make sure you use a CO2 cartridge as recommended to maintain peak efficiency.

We have learned over time that we must use the Quick Clear to get our Magnets started. When the darned mosquitoes start biting it is already too late to think "will my magnet work this year?" You absolutely need to use the quick clear to make sure it is ready to go.
The Mosquito Magnet Quick-Clear CO2 cartridges came quickly, and we are pleased with the service. We knew the excellence of the actual product.