DynaTrap Outdoor Insect/Mosquito Trap 1/4 Acre, Black

The claim that this unit produces carbon dioxide (and hence ATTRACTS mosquitoes) is highly dubious. True, the units traps stray mosquitoes that venture near it. But so do other similar products that cost one-fifth of the price. Forget one-fourth acre, the unit is NOT effective over an area of 30 square meters in ideal conditions (operating at least two hours in complete ambient darkness without human presence). It certainly does not 'attract' mosquitoes, hence the claim that it produces carbon dioxide is suspect. It only traps stray mosquitoes that are attracted to it by its light -- at four or five times the cost of similar products that are just as effective.