Surefire Reactor Wetter 600 Surfactant is a spray additive designed for use with fungicides, insecticides and weed killers. Reactor Wetter 600 is used to increase the activity of pesticides and to increase the spray droplet coverage for waxy leafed plants which are normally hard to wet. Reactor Wetter 600 increases the activity and efficiency of pesticides and herbicides. It increases wetting and improves spray coverage. Reactor Wetter 600 can be used with alkaline sprays and mixes easily with all types of water. Reactor Wetter 600 is registered for use as a spreader spray (refer to directions) and wetting agent (use as directed). Size: 1 litre.