BLUE WEEDKILLER CHEMICAL SPRAY INDICATOR DYE 1L | SEE WHERE YOU SPRAY CHEMICALS | DYE WASHES AWAY WITH RAIN/FADES IN SUNLIGHT AFTER USE

Good that it fades away after application, it’s made of blue food dye.I use it when weedkiller dabbing, to check that I’ve not put it on neighbouring plants that I want to keep.Don’t use too much like I did, you’ll only need a thimble full of dye in a 7l domestic sprayer. I couldn’t find a smaller quantity than 1l for sale anywhere.

Used this for some of my land and a friend's. They where very happy with the results. And so was I will use again.

Really useful for days out ,Durable well made

Used this stuff many times beforeIt does kill off the weeds brilliant

Used for applying liquid iron to a bowling green. Works well. A bit overpriced for what it is.