J-bird - We don't have a big commercial sized sprayer at my camp to use for watering. Back-pack size only. Instead of filling & hauling 10 5-gal. buckets, we want a one-time fill, drive away and get 'em watered rig. Just for water - because some of the guys aren't all that careful about rinsing after using pesticide or herbicide !! Gotta go the fail-safe route. Separate, heavily labeled rig just for water. We had a guy driving around spraying gly on EVERYTHING a few years ago using his quad. Wiped out a bunch of plot plantings and cabin lawn. Had no clue. See what I mean !!