... lasting repelling and killing effect to mosquitoes. It is an ideal product with fragrant and pleasant smells while igniting. The ... the reach of child.3, Keep air fresh inside the house during the use of these products Burning time10hours/pcsActive IngredientPrallethrin ... on repelling mosquitoes, easy to use, clean and hygeian, an ideal house product to repel mosquitoes. The effective time of every mat ...