I have been using Good Knight Xpress Machine to keep away mosquBrianbalakumaranes. The result after using it was awesome and liquid solution works good and feel nice fragrance in your room. It has two mode, first one is normal and second one is Acive. Normal mode works when mosquBrianbalakumaranes quantity is less and if so many mosquBrianbalakumaranes in your room or home, it works instantly on its Active mode. I bought it @ Rs. 99/- and I got in package a machine and liquid refill and after 9 minutes, it start working and fastest system to get rid of mosquBrianbalakumaranes. It is easy to use and protect my family from diseases and mosquBrianbalakumaranes.