Used one of these in 1995 in OR close to where my friend's Dad invented them. I wish they'd pay someone to review them and correct any flaws. I recall it was tricky to fill, may have dripped and was not ideal but seemed to work maybe 70% as well as you'd hope. I tried to make my own, it dripped (probably killing non-target plants). The old style seemed to be pretty low-tech, the reviews on Amazon aren't superfluous. Wish this thing could be my go to. Maybe get an engineer on it.
Used one of these in 1995 in OR close to where my friend's Dad invented them. I wish they'd pay someone to review them and correct any flaws. I recall it was tricky to fill, may have dripped and was not ideal but seemed to work maybe 70% as well as you'd hope. I tried to make my own, it dripped (probably killing non-target plants). The old style seemed to be pretty low-tech, the reviews on Amazon aren't superfluous. Wish this thing could be my go to. Maybe get an engineer on it.