It is one of the most effective mosquito repellent system available in the market.
In order to move away mosquito from the room you do not need to use it for long.
Half an hour or one hour use is sufficient for moderate number of mosquito.It has a
modern machine and a liquid repellent.The smell of this is quiet good.But if you inhale it
for a longer period it will cause respiratory problem.It is better than other repellent
because other repellent like ordinary good knight requires much more time for
same efficiency.Since it is used for lesser amount of time it is less harmful.It is costlier
than others but worthy of its value.