Select this HD Hudson Bak-Pak® Duster Sprayer and Mist Blower for unmatched portability, efficiency, and flexibility. Built with both a padded adjustable shoulder strap and a padded backrest, you don't have to strain in your duster and mist blower jobs. And with a capacity of 3.75 gallons, it's also lightweight enough to easily carry. Choose it for pest control and fertilizer disbursement.