The Hem Citronella Incense sticks worked very well. The mosquitos stayed away from biting us during an evening of fireworks. I did not have any problems with them being lit, staying lit, or wind blowing them out as others mentioned in their reviews. It was a great bargain to get 6 packs of 20 each in this box for the little cost. Worked just as well as candles work but because of the amount of sticks included its a much better bargain than buying citronella candles.