My garden has about 2000 square meters and effective products against weeds are mostly liquid and difficulty deploy at such great gardens (eg Banvel M). With this product, and a fertilizer spreader (battery operated) I am completely finished in my garden in a good half hour. My garden was not maintained for about 16 years (mowing, never fertilized or otherwise). Before this product two years ago for the first time used, I thought about re-create the entire lawn (because almost no grass to see was sheer weeds (mainly clover)). Thanks to this product I have now where I used it almost a carpet grass (of course minor points are left with weeds even with me, but also visitors are impressed as I 2000 sqm relatively weed-free get). Also the price (I paid here currently about 40 euros on Amazon) I think that's right, because you do not even do not get elsewhere often a pure fertilizer, at least 400 square meters. I would recommend this product like so many others only friend here, I so easily get a very nice lawn, nearly weed-free (except for Gundermann and smaller places with clover). I've seen it three years ago used the first time last year not because almost no weeds nachkam, although this year is again what came but also not much, but because I always wanted to fertilizing and good fertilizer usually cost more, I have this agent reused about 3 weeks ago, now it looks even more perfect! The weeds will die within about two weeks, and the fertilizer can grow the grass like a carpet tightly. Applied exactly as described. Against Gundermann this means does not help, however. Due to the overall result, which I have not nearly expected, full 5 stars!