After using at least 4 other brands of dye this one is by far the most effective. 2-3 oz per 4 gallon backpack sprayer is plenty dark to see on the toughest weeds/grass

This stuff is a life saver for the do it yourselfers like me. It doesn't take much at all, maybe an oz depending upon the size of your sprayer. Very visible for up to 48 hours

This really helps with seeing where you've sprayed. Don't get it on your skin, it takes forever to get it off.

Very blue and very clear where spraying due to the color. Works very well and will definitely purchase again! Highly recommend!

I needed this to make sure I sprayed my fert on every inch of my grass. Worked great!