I am new to this site & wanted to get some feedback on the use of a drop tank with a dual line hose. We have recently switched from a granular to a liquid company. In Pennsylvania we are only allowed to full spray a lawn with herbicide twice a year. I do not want my technicians wandering around a 20,000 sq. ft. lawn with a backpack so I thought that a drop tank with herbicide & a dual line would be the way to go. Is there any branch managers out there that can give me some positives & negatives?