I really like Round Up. This product is weed and grass killer. We don't have much grass in our back yard, so I spray just about everything. The Pump-n-Go container is great; just pump 25 times and you'll have enough pressure to spray for 5-10 minutes (I don't really count, I just keep pumping until the sides are bulging). The Pump-n-Go container isn't very expensive (under $20) and you can buy a gallon of Round Up liquid refill (under $15) when you run out. It's easy to carry around and use. There is a little safety latch that retracts the nozzle and an easy to press lever to release the weed killer.
This is our before picture:
It didn't kill them completely because I was using the Round Up sparingly; it was almost gone and I was trying to spray as much of the yard as I could. It also rained a couple times, so a few more weeds grew in.Here is a photo of a weed a few days after being sprayed. Last year, I waited until the rainy season was over and had SO many weeds to spray, so this season I thought I would spray them as they come in so it won't be so overwhelming when the rain stops.
Here is a photo of a section of our yard March 2009 - all the green you see are weeds I had to kill last season; not a single plant or patch of grass hiding in there. These and many more weeds were dead a few days after being sprayed.
I'm out of Round Up and plan on buying a refill jug (or two) the next time we go to Lowe's.