Preen Extended Control Weed Preventer - 4.93 lb. Bottle - Covers 805 sq. ft.

I was desperate for something to help with Japanese Stiltgrass. Even after buying and applying Preen I kept waiting for it to fail. But it didn’t. I applied it in February since weeds start early in the South. You can see from the photos what the treated area looks like in June vs. the untreated area. It’s a dramatic difference. Yes, there’s one little stiltgrass in the treated photo…I must not have gotten the preen quite close enough to the bird feeder post. But there’s a few hundred that aren’t there at all. I assure you, that Preen was well worth the price and I will keep using it! I wish I had tried it several years ago. Edited to add….this prevents weeds from growing from seed and does a great job. The reviews complaining that it doesn’t kill weeds or prevent perennial weeds from growing missed that it isn’t supposed to do that. Which is good for me because I want my perennial flowers and bushes to come back, just not the stilt grass which is an annual.

This stuff works great!! No weeds at all! I was very surprised by how well it controlled the weeds!

Preen does a great job of reducing the growth of weeds and grass in our flower beds, though it’s not completely foolproof. That said, it works well enough that we’ve repurchased it multiple times. One of my favorite features is the container’s special distribution cap—it makes spreading the product evenly across the area incredibly simple. Overall, it’s a worthwhile investment to save a significant amount of time and effort weeding flower beds.

I love this extended control preen and use in every year. I start it during the early spring rains. While Preen doesn't get rid of every weed, I've noted that the years I don't use it, I have far more weeds to remove. The price on this at the time I purchased it was the same as my big box store, and with my Amazon Prime I didn't have to waste my time or gas (which is currently costly). I pour this larger amount in my smaller Preen spreader. Highly reccommend!

This is fantastic stuff, it works so well

I love this product you pull the weeds first then apply the preen then water in and you will not have weeds for six months I very happy with preen weed preventer

Product seems fine. A problem with packaging and delivery. Product lid not closed and seal not attached. Part of the product was in the box and falling out of the box. The delivery was to be at the back door since front porch is not accessible so driver may have thrown the box on the front porch.

I live in Arizona and even though it’s dry, we get a lot of weeds. Especially the desert grasses. I use this twice a year in June and in December and I never get weeds anymore. In fact, I barely have to do any yardwork at all. It’s pretty great.