Just the other day, there was one complaint of using a Chem-blade to cut open the bottoms of 2.5 gallon jugs = it was messing when removing the split-open jugs and dribbling "rinse water" from the cut plastic flaps.(bottom of jugs)

I could envision this issue, maybe a guy needs to wiggle the jugs, a little more, when it is over the tanks, and try to get the rinse water drained a little better. (I have no experience, with Chem-blade, BUT I do have a spring-loaded bottle rinse nozzle, and I like it)