The cleaning cartridge is used regularly to clean the LPG spreader inside the machine against natural contaminants present in all LPG. The cartridge is very easy to use and connect to the machine. By using cleaning cartridges, you prevent your Mosquito Magnet from becoming clogged, difficult to start or having to be returned to the service for cleaning the LPG spreader. Never use compressed air in the cleaning valve due to the risk of contamination. Note Does not apply to models with serial numbers starting with 018. Cleaning cartridges are sold in packs of 3 cartridges. Cleaning cartridge is used for each change of LPG bottle 10 kg. The same also applies at the start of the season and before winter storage.