Ratings & Reviews for Preen Extended Control Weed Preventer 4.93-lbs. 805-sq ft Pre-Emergent Herbicide
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise this product for exceptional weed prevention, with most reporting near-complete elimination of weeds in flower beds and landscaping areas. Reviewers consistently highlight its pre-emergent action that stops weeds before they emerge, with many noting results lasting two to four months or longer. The granular formula is widely described as easy to apply with clear instructions and an included scoop for precise spreading. Most find it intuitive even without gardening experience. While a few report inconsistent results or question longevity claims, the vast majority credit it with significantly reducing garden maintenance and express strong loyalty as repeat users.
Customer review summary generated by AI, including incentivized reviews.Did not work
Would Not RecommendApplied as directed to rock mulched areas before leaving for the summer. Returned 3 1/2 months later, weeds everywhere, to make matters worse they’ve already gone to seed. My neighbor had the same problem.
From preen.com
Stopped the weeds
Would RecommendI bought this a few weeks ago and it is working better than expected.
Verified Purchaser
Hoping it helps keep weed seeds from growing!!
Verified Purchaser
It covers the ground very easily
Would RecommendThe top opening is cleverly designed to make sprinkling easy. I'm waiting until our rainy season to see if it actually works!
Verified Purchaser
So far so good.
Would RecommendIt seems to be working. I'm using it in driveway cracks. I guess we'll see how it goes.
Verified Purchaser
I just bought this and I put my first application down very easy
Verified Purchaser
Preen
I bought this last week and applied it do i have no idea yet if it works at all. I have used it before and it must have worked because we bought it again.
Verified Purchaser
Isn’t effective
Would Not RecommendI bought this a few weeks ago, pulled/removed weeds. Applied like the instructions said. Product doesn’t appear to be working
Verified Purchaser
Keeps weeds out!
Preen is excellent for keeping new weeds from growing! I use it every year in my flower garden!
Verified Purchaser
Wouldn't use anything else, regardless of price
Would RecommendVerified Purchaser
Thank you for your review! We are very sorry to hear that the Preen Garden Weed Preventer did not work as you had expected it to. We do stand behind ... Read More