Mortein NaturGard Aerosols Mortein NaturGard Mosquito Killer spray has a unique Citronella oil formula. It effectively eliminates mosquitoes and other flying insects in a more natural way. It is water based and hence free from harmful chemical solvents. You can spray it with confidence around the home to protect your family. It is available in 2 SKU's: 400ml & 250ml Citronella Plant Mortein NaturGard contains Citronella Oil which is a natural repellant of pests. Citronella is also known as lemon grass and has a great fragrance Mortein NaturGard Vaporizer Mortein NaturGard Vaporizer refill has a unique citronella oil formula. It is effective against both mosquitoes and houseflies in a more natural way. It is available in 2 SKU's: 45N Refill and Machine Machine Combipack + 45N Refill Included in this pack is the new Mortein PowerBooster with sliding power control for effectively controlling varying number of mosquitoes.