My front lawn was hopelessly infested with all manner of weeds. I decided to kill both weeds and grass and start over by reseeding. Temperature was in the low 80's, little or no wind and no rain forcast for at least 2 days. The product worked as advertised. Noticeable wilting after 24 hrs. then at least 90% die off after 3 days. Some stubborn weeds still showed some green so I gave those few a 2nd dose. After a week everything was completely brown. See photo. I raked off the dead grass weeds and roots and am now ready to reseed after adding some compost to the soil after 3 weeks. Although according to Monsanto I could have reseeded sooner. The small triangular area at lower left of photo is a test of my seed a week ago. Those people that have had problems with the weeds not being killed, I suspect did not follow directions. Either too cold or rain sson after application. .

The spray nozzle needs a "spray" setting not just foam and stream

I wanted to refill. Checked the instructions on line and on the containers. No instructions other than be careful. Will try YouTube

I’m shocked at how quick and effective this stuff is! I bought the trigger pump spray bottle version of this stuff and it’s great! It’s low cost certainly made it a gateway product! Anyways, I sprayed (I did the foaming function; I like that one most) at 9:30 to the intrusive ugly looking weeds and by 11:00, the weeds were sickly brown. I sprayed another layer for luck and I knew that weed was now doomed! Yeah, the weed did end up dying, in a day. I will try more products now.