I tried the search feature and it seams to be down right now. Does anyone know what the coverage per 1000 is for the Echo MS 1000 backpack sprayer or similar. I am getting ready to mix up a batch of drive in one and cannot find what its coverage is. I haven't used drive in a long time so if someone knows how much to add to a 4 gal backpack that would be appreciated. The label recommends .367oz/1000sf plus an .5 oz of adjuvant per 1000 sf to jog your memory. PS, I do plan on mapping out 1000 sq ft and spraying water to find out exactly what I am laying down but have a couple busy days ahead of me. Will post my findings when available.