This question doesn’t have an unambiguous answer as it depends on the amount of mosquitoes in your region, on the outdoor/indoor usage and the budget reserved for buying a trap. Propane traps are considered to be the most effective ones for yards with lots of mosquitoes (they are as a rule the most expensive ones too), and the indoor UV mosquito traps which electrocute the insects are the most useful ones indoors. The list of mosquito traps is not limited to these two types, as we also look into CO2, H2O and heat mosquito traps in our review. You can find out everything about the advantages and disadvantages of certain models here!