Good Knight Advanced Active+ is mosquito killer product. It is oldest brand of India.
In that system it contains machine and refill. this machine have 2 modes. 1st is normal mode and another is active mode.
The normal mode is not so effective to kill the mosquito’s. But the active mode performs better relief from mosquito’s.
Now a days it produce some harmful effects like burning sensation to nose and other some poisonous effects.
It is very easy to use because its installation is very easy. Just feet the refill in machine and plug and start. select the mode as compatible.