Soap suds

One of the hardest things to do when spraying something is to make sure you get good coverage, without doubling up on the edges. That means you need to know where the edge of your spray pattern is. There's three ways of knowing where the edge of your pattern is...1) if there's dew on the ground you can see you tire tracks or the product you are spraying will knock the dew off of the leaf blade 2) you can dye the spray solution so the spray mix will sort of "paint" the ground 3) you can use a foam marker to identify the edge of the spray pattern. An example of the dew trick and the foam marker is in the picture below.

The dew trick really is the best since there's no extra cost to it. The negative of the dew trick is that it doesn't work very well past 9 o'clock when the sun is up and roaring burning off the dew. The spray dye indicator is a good one to use, but sometimes it gets on shoes or golf balls and people think the world is being poisoned. The best one is the foam markers because it's cheap, harmless and disappears so you'll never know something has been sprayed (unless you see the foam).

The foam is basically good 'ol fashioned soap suds. So the next time you see this white marshmallow looking stuff on the ground don't worry. It's not some sort of toxic puss oozing out of the ground. It's just an environmentally friendly way for my team to make sure they are correctly applying whatever they are spraying.