I purchased 2 treatment devices for mosquito bites. I already had the opportunity to try such a device and I knew the benefits. I return the Antilles, where I spent three months in the first month in Martinique in a particularly infested place mosquito because of frequent rains. Despite the mosquito spray, pitting the evening and during the night are very numerous. The use of care apparatus has been daily with immediate effect the disappearance of pain and itching within a few minutes. No crusts or infections because there are no more bites scratch reflex. To report the long duration of the 9 volt battery. I highly recommend this device, but said that it is important, at least initially to use only this unit and to get to know his own reactions during use, as a matter of convenience this because of heat from the tip.