Save on plants, planters, pavers, mulch, tools, and more. We’ve pictured the Ryobi 40V Cordless Battery 4 Gal. Backpack Chemical Sprayer with 2.0 Ah Battery and Charger for $179 ($60 off, and priceless when it lets you get the whole spraying job done much faster than constantly repumping the pressure in a manual sprayer.)