I bought this a few years ago when I started doing my own lawn care again. I got tired of paying a company to pretend to put products in my yard and leave a sign. I use it for chelated iron, nitrogen, cross check insecticide, and fungicide. I've yet to have any issues with it. It has got to be the best hose sprayer on the market. I've actually tested the accuracy with a bucket and find the tablespoons per gallon to be spot on when using water to test with. I would assume it would do just as well with actual products.