Prices, Promotions, styles, and availability may vary. Our local stores do not honor online pricing. Prices and availability of products and services are subject to change without notice. Errors will be corrected where discovered, and Lowe's reserves the right to revoke any stated offer and to correct any errors, inaccuracies or omissions including after an order has been submitted.

64 oz Clear Mulch Glue Concentrate

Ratings & Reviews for Petra 64 oz Clear Mulch Glue Concentrate

4.7
538
Review
 4.7 out of 5
540 Reviews


100% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this mulch and rock glue as a transformative landscaping solution. Reviewers consistently report that it effectively locks mulch, rocks, and gravel in place through harsh weather, heavy rain, and strong winds, with many noting materials remain undisturbed for weeks or months. The concentrated formula is easy to apply using a standard sprayer at a 1:1 ratio, dries clear, and covers large areas economically. Most appreciate the non-toxic, pet-safe, water-based formula. Nearly all customers recommend it as a worthwhile investment for eliminating constant landscaping maintenance.

Customer review summary generated by AI, including incentivized reviews.
540 Customer Reviews

Good product

Would Recommend

Works well on pea gravel

March 22, 2026
From 1 Gallons Clear Ready to Use Mulch Glue Verified Purchaser
Was this Review Helpful ?

Keeps rocks stuck!

[This review was collected as part of a promotion.] Thanks Influenster and PetraMax for the outdoor rock glue! It was a perfect claim for the river rocks around our pool. The instructions are easy to follow and seemed to completely dry in about 24 hours. So far everything is still in place!

March 21, 2026

From influenster.com

Makes my walkway beautiful!

[This review was collected as part of a promotion.] This rock glue is great!! We have used it on the rocks by our walkway to keep them from constantly getting onto our walk path. The glue holds up well and is not visible once dry. It holds up well and has already lasted several weeks in the elements. The packaging is nice and durable. It’s easy to carry and bonus, it’s made in the USA!! There was no big mess to clean up and overall I’m really happy with it!

March 21, 2026

From influenster.com

Works well and easy.

[This review was collected as part of a promotion.] I was given the chance to try this mulch and rock glue, and I'm really impressed so far. It's easy to use (although I didn’t get the sprayer with it and had to figure out my own) and seems like a great solution for keeping everything in place without constant upkeep. I'm especially excited to use it in my garden by our high-traffic door where mulch always gets kicked around-hoping this finally keeps things looking neat and tidy!

March 21, 2026

From influenster.com

Tried and true

[This review was collected as part of a promotion.] I can’t wait to use this on my new garden area. This is a tried and true product and last for literal years. I love the look of white gravel but it’s impossible to get contained. Not anymore with this glue

March 20, 2026

From influenster.com

Good outdoor glue

[This review was collected as part of a promotion.] I liked using this PetraMax Outdoor Mulch and Rock Glue Concrete for Landscaping. I used it on the small rocks at my house and felt like they stayed put throughout the last few weeks from heavy winds and rain occurring I was disappointed I did not get the sprayer included for easy application.

March 19, 2026

From influenster.com

Easy to use!

[This review was collected as part of a promotion.] I did a test patch where my kids and animals kick up the mulch and I am very happy with the results. We even had a bad wind storm and all the mulch stayed in place! The instructions were easy to follow and it was easy to use! I can’t wait to do more outdoor projects with this!

March 19, 2026

From influenster.com

Neat product

[This review was collected as part of a promotion.] This is a really neat product. It does as intended and sets your landscaping material so it doesn’t move. It’s safe. Looks well. Easy to use packaging and seems durable.

March 18, 2026

From influenster.com

Keeping pea gravel in place

[This review was collected as part of a promotion.] I love the idea of keeping pea gravel in place and this product does seem to have that capability so long as there isn’t any foot traffic. It mixes nicely with water but pouring it on the gravel dos really provide good coverage. I feel this product would work better if it was sprayed onto the surface for better more even coverage.. I didn’t see directions on the bottle for sprayer application though, thus the 3 star review.

March 18, 2026

From influenster.com

Pretty great so far.

[This review was collected as part of a promotion.] Pretty effective so far after two coats. Keeps my pea gravel tight and also adds a nice sheen to it. I started with a bottle sprayer, but would recommend getting a garden sprayer if you have anything too large to save on time (and your hand). This bottle is like concentrate so make sure you mix it with water.

March 18, 2026

From influenster.com

Help keep your landscape neat

[This review was collected as part of a promotion.] Petra Max, landscape, mulch, and rock. Glue is great to have in your yard. It keeps your grass and sidewalks clear of mulch, so your landscaping. Awesome.

March 18, 2026

From influenster.com

Excellent for landscaping projects.

[This review was collected as part of a promotion.] Very easy to apply on small rocks and effectively holding them in place even during high winds and rain. Excellent product with very affordable price.

March 18, 2026

From influenster.com

Great product

[This review was collected as part of a promotion.] This is a fast clear drying way to lock loose mulch, gravel or small landscape. You can spray two quick sprays coats to create a nearly invisible mesh. That's doesn't budget with wind, rain. It comes with instructions on the back on how to use this product. They are very easy to follow.

March 18, 2026

From influenster.com

Perfect

[This review was collected as part of a promotion.] Such a durable formulation. Suitable for normal wear during the years changing weather. Your stones will stay in place. I haven't experienced any mold when using this. It's very effective, and the application was easy. The result is exquisite.

March 18, 2026

From influenster.com

So effective!

[This review was collected as part of a promotion.] My husband loves using this rock glue! It covers a great deal of your project! Easy to apply and to clean up! The instructions are so easy to understand!

March 18, 2026

From influenster.com

Great for yard

[This review was collected as part of a promotion.] Starting out our Spring using this glue to keep down the mulch and rocks. The durability and strength is amazing. Cleanup is a breeze. The adhesion is solid and consistency is perfect.

March 17, 2026

From influenster.com

Keep it neat!

[This review was collected as part of a promotion.] Spring is here so you know what time it is! I am switching from mulch to rocks this year in my built in planter. I tested a small area to make sure the product was what I was looking for. I mixed with some water and after applying it took about a day to fully cure. That is with only one layer though. This bottle will go a long way by diluting 1:1..It dried clear and the rocks felt secure. I like that its pet and plant safe and allows for water ...

March 17, 2026

From influenster.com

💚

[This review was collected as part of a promotion.] So far, so good. This stuff does what it claims! You couldn't even tell if was on there once it was dried. I'd probably buy to use again in the future.

March 17, 2026

From influenster.com

Strong hold, easy application, and proven performance even in severe weather.

[This review was collected as part of a promotion.] I was initially skeptical about how well this product would hold, so I decided to really put it to the test by applying it just hours before a major storm with 70mph winds. After only 4 hours of drying time, my newly applied rubber mulch did not move at all, which exceeded my expectations. It was very easy to mix from concentrate and even easier to apply using a simple sprayer. It spreads evenly and dries completely clear with no cloudy residue...

March 16, 2026

From influenster.com

A must have product

[This review was collected as part of a promotion.] This stuff works amazing at keeping my mulch together and not getting scattered I would definately continue to use this product since it works so well

March 16, 2026

From influenster.com