Kobalt 4-Gallons Plastic 40-volt Battery Operated Backpack Sprayer in the Garden Sprayers department at Lowes.com
Amazon.com: Tomahawk 5 Gallon Gas Power Backpack Sprayer 435 Pressure for Insecticide Fertilizer Bugs Weeds Mosquitoes and Ticks with Foundation Attachment : Patio, Lawn & Garden
HDX 4 Gallon Manual Piston Pump Backpack Sprayer 2204HDX - The Home Depot