Stainless Steel Blank Tips are to be used in place of a regular nozzle tip where you do not currently want the overhead system to spray. The blank tip has no hole for the insecticide to spray from. For example, if you are temporarily converting a stall to storage, you would put in a blank to plug the nozzle, allowing you to later replace it with a functioning tip when you convert it back to a stall.
I tried several things to get rid of the flies, but nothing worked. I installed my Shoo-Fly system last year and have had no more fly problems ! I was shocked at how fast it worked.
Caryn Henry Barrel Horses - Deleon Springs, Fl 32130