Mortein Naturgard Insect Control System Refill Pack of 2 SKU: 347659 MODEL: RB3034677 Error. try again later You've successfully joined the club $ 19 .99 pack Available on orders $50 to $1500. More info × Mitre 10 Variants Mortein NaturGard Insect Control System automatically helps rid your home of flies, mosquitoes, ants and moths. It releases bursts at regular 15 minute intervals. Each refill lasts for up to 4 weeks. Features and benefits Automatically releases regular bursts of mist to continuously keep your home protected from flying and crawling insects. Contains natural eucalyptus essential oils. Easy protection you can set and forget.