We used this product for some time because firstly, Good Knight is certainly better than other companies making mosquito repellent products. Secondly, the normal coils create very dense smoke making people run away before the mosquitoes.
It was alright for some time, and it is certainly effective against mosquitoes. So, it serves its purpose and can be used all night without obvious harmful effects.
But it does cause subtle damage. There is a constant feeling of pollution because of this coil. The major issue however that it causes excessive eye irritation. I would get up at night with my eyes watering terribly because of this product. Certainly not for sensitive people. And with so many reports about the harm caused by these coils, it is difficult to ignore the side-effects.
I have started using Good Knight liquid now which is very effective and economical. It is not causing any damage either. I would have loved to review it but can’t find the suitable product here on mouthshut.