The dual hose and gun was tried over 20 years ago with the Idea of saving chemical cost by spot treating. The problem was that system required an educated eye of a tech who actually cared. This goes back to what IMHO is the whole problem with TG. They are top heavy and use unskilled tech who are paid peanuts. ANY TECHINCAL SERVICE IS ONLY AS GOOD AS THE TECH WHO COMES TO DO THE WORK. In an article in one of the Green Industry Magazines. The new CEO for TG announced the Memphis home office had 300 employee and he would increase that number by another 200 in the next few years. Draw your own conclusion about adding more top heavy management. BTW Nothing was said about educating or Keeping better techs in the Trenches. I don't want TG to go under. They do provide Lobbying power for the Fert & Squirt industry that we Need in times of reckless Tree Hugging. .