Hi Yield Spreader Sticker Should Be Added To Anything You Spray On Your Lawn, Garden Or Trees. It will make everything you apply work better. Increases absorption, translocation and sticking of pesticides. Spreader Sticker makes water wetter. Increases weathering so chemicals don't wash off as fast. Helps move chemicals through thatch. Enables more uniform distribution of chemicals. So, if this stuff is so important, why don't they just put it in the weed killer or bug spray to start with? You mix it 2 parts chemical to 1 part spreader sticker. Only mix as much as you are going to use at a time. If it sits mixed for a period of time the chemicals will thicken and clog your sprayer. This is extrememly important stuff. Use it every time you apply a chemical! 8 Oz.