As Paracelsus recognized the dose is decisive for the effect of a poison. I have used this means now applied twice, namely 10ml applied to 1 liter of water, with a normal syringe pump. The one provides previously with clean water so that the spray does not too atomized. And so I spray only the weeds, thus saving the environment unnecessarily poison. This stuff all goes well a Giersch and sorrel. It takes a few days and then you can see how the plants wither slowly and get yellow leaves. In the last application it has even started to rain for 2 days after about 6 hours, and it still works because the agent is previously dried and it's just a contact poison, drum it also needs the appropriate leaf mass to be injected it. So I would recommend the product and have thus achieved good results. Important: There must be no wind, otherwise the stuff is just not where it should everywhere. And afterwards not equal mow the sprayed leaves, but leave on for a few days. If you are accidentally sprayed plants were gotten nothing helps a shower with the garden hose and the poison is washed. And close of useful and ornamental plants I would also not apply.