Scanmask treats the widest variety of pest insects and is our recommended product when treating for multiple pests and as a preventative treatment. Our Scanmask Spray is easy to apply using the Nema-Jet Sprayer, watering cans, pressure or injection sprayers. We are nematode experts, and have been producing nematodes since 1985. When you buy from BioLogic, your nematodes will be coming directly from the producer ensuring the freshest product on the market.