Attention, because we must not put a lot into the diffuser, because otherwise we will flee together mosquitoes !!!!! The smell of citronella is very strong, this being, if dose correctly, this is a real repellent that works perfectly! I put my diffuser 30 min in the rooms before going to bed, in hot weather, I leave the windows open and no mosquitoes with this mixture of essential oils! You will understand, I am delighted with my purchase! Do not hesitate!