Rainmaker 4 Gallon (16 Liter) Backpack Sprayer All-purpose sprayer ideal for herbicides, pesticides, liquid fertilizers and many home applications! Manual pump backpack sprayer is ideal for large jobs. Includes four interchangeable sprayer nozzles for different applications. Trigger with a lock-on option can be engaged for a continuous spraying. Padded shoulder straps for added comfort. This sprayer has an integrated filter included and a 4 ft hose. Replacement parts available online.