Looking for a new backpack sprayer? Read our reviews of the top models and find the best one for your needs. Both battery powered and manual sprayers reviewed. There is no noise, no emissions, no manual pumping, and no need to fill with fuel. Perfect for applying weed killers, insecticides, degreasers, lubricants, deicers, fertilizers, deodorizers, glass cleaners, disinfectants, switch lubes, and coil cleaners.  Chemical-resistant design is versatile and capable of…