I am still using it and earlier I took part in a contest but I never get the Prize. Even I have email to them they do not response to me. Sad after making effort to join the contest they promise to give prize but I never get it. It was last year and the Prize supposed to come from Singapore.
I think if they are not able to send the Prize then they shouldn't be organize the contest. Sometimes after using it I get bitten by many mosquitoes.