I have used this product for three seasons now and it cuts my weed growth down by 90%. It last for about 90 days. I like the fact that it turns the ground brown when sprayed so you know where you sprayed, the brown disapates in about two weeks.
We need something to control sandburs - the label says this product will control them - but it did not work for us. We used this product in conjunction with an herbicide. This would kill the existing sandbur grass and prevent the sanbur grass from reemerging later. This is a very expensive pre-emergent product that does not work on the one pest we need and want to control.
As far as I can see I am completely free of Japanese Stiltgrass and several other weeds. Best stuff I've ever used. It does what it says. Can't beat their prices either. It is a little messy to handle but works well with my 8 gallon electric sprayer. The yellow dye helps to show where you've sprayed to minimize waste. Clean your sprayer well immediately after use. Wear gloves and long sleeves and flush any spillage right away. You'll be pleased.
I've been using this for many years and find it dependable and affordable. I use it for lawn preemergence and also mix with Roundup for pre and post emergence in open areas. It has a brownish orange color which usually isn't a problem but sometimes my customers object in highly visible areas. The color fades fast though. 2.5 gallons lasts me a long time.