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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
539 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.
539 Customer Reviews

Lock down those rocks!

[This review was collected as part of a promotion.] Super fantastic rock glue. Ultra concentrated. Easy to mix and use. Looking forward to finishing this little piece right outside. Not a super strong odor, says it’s quick drying. From the test section I tried fantastic results.

May 11, 2026

From influenster.com

Make sure you apply at least three coats.

[This review was collected as part of a promotion.] User-friendly with ready to use formula easy to apply with the pump sprayer. Hose up pretty well on my rocks and left a shiny little finish. Does have a little smell to it while applying so you might wanna wear a mask. On the mulch, I had to apply another coat. Overall, a very good product.

May 9, 2026

From influenster.com

Must have for yard projects!’

[This review was collected as part of a promotion.] The glue is absolutely the best! So easy to mix and use! No more mulch flying all over when blowing and weed eating! It looks so nice and will last a long time. Will also use this for our next paver protect! Dries excellently as well!

May 8, 2026

From influenster.com

Glue

[This review was collected as part of a promotion.] The glue is terrible. We spray it stays white for a little while then dries we watched some videos on it, and the cleanup is hard if you have to clean it up.

May 7, 2026

From influenster.com

Seems pretty good!

[This review was collected as part of a promotion.] This was easy to use. I mixed it up as directed, sprayed it on to the rocks in my planter, and I left it to dry. It seems to be holding together nicely! The rocks are staying in place!

May 7, 2026

From influenster.com

Best landscaping product ever!!

[This review was collected as part of a promotion.] I absolutely love this rock and mulch glue I’ve purchased several of these since trying it out. I have a dog that is blind and kicks around the rocks sometimes tripping over them this rock and mulch glue is absolutely a to go too not only did it hold the rocks and mulch down it makes the rocks and mulch a shiny nice sheen. Reading the directions on container is a must mix equal parts and purchase a good pump sprayer as well. I had no issues wit...

May 6, 2026

From influenster.com

Strong Hold, Versatile Product

[This review was collected as part of a promotion.] A versatile product that can be used for landscaping and home projects/crafts. PetraMax Outdoor Mulch and Rock Glue Concentrate is easy to use with its ready to spray form. Just put it in a sprayer and get to work! The PetraMax gloves are convenient and help keep your hands clean while working so you can turn the rocks, or mulch, by hand without needing additional tools. The glue dries well out in the sun and heat and has a strong hold. I ...

May 5, 2026

From influenster.com

Seals well

[This review was collected as part of a promotion.] We used this as a sealer between our pavers to keep the rock/dirt mixture in and secure. It seems to be stabile between them and dried quickly after applying. It reminded me of Elmer’s glue and just sealed it all together. It was outdoors but didn’t smell an overpowering odor from the solution. Overall recommend and can’t wait to try it on mulch when we get fresh mulch laid out.

May 5, 2026

From influenster.com

Great stuff

[This review was collected as part of a promotion.] I tried rockscape, mulch and rock glue. I’m impressed. It held my stones in place. Sprayed on evenly and cleanup was easy. Best part-no more worrying about rain moving everything around. I’ll be using this again.

May 1, 2026

From influenster.com

Lock in your beautiful newly laid mulch

[This review was collected as part of a promotion.] This product makes preserving mulch so much easier. Keeps it locked in place and no worries about wind or animals moving mulch. No smell and works beautifully

April 30, 2026

From influenster.com

Highly recommend

[This review was collected as part of a promotion.] This stuff is awesome! We have a gravel driveway that I’m constantly sweeping back into place. This worked great. I wasn’t able to do the whole driveway because of the weather, but the area I did worked great!

April 30, 2026

From influenster.com

Helpful to contain small rocks in a water garden

[This review was collected as part of a promotion.] I have a mandated rock water garden in my backyard that gets a lot of water run off in the spring. This product has helped me contain the smaller rocks better than not having used this at all. I am not sure how long it will last, but I would purchase again seasonally if needed.

April 29, 2026

From influenster.com

Durability and longevity

[This review was collected as part of a promotion.] The Petra Max glue concentrate makes the appearance of our outdoor walkway clean and in place. The mixing and application of the product was seamless.

April 29, 2026

From influenster.com

Great but had to get extra supplies

[This review was collected as part of a promotion.] We have always had an issue with the ground being muddy around our trash cans so when the chance to try PetraMax Outdoor Rock Glue was offered we were excited to try it out in that area. It worked great for the area and I would have given a higher rating but it did not come with a nozzle to apply it so we had to go get additional supplies to try it which we were not aware of ahead of time. The area we used it in after getting the necessary pie...

April 28, 2026

From influenster.com

Works like it should

[This review was collected as part of a promotion.] Easy to use, works great, the gravel stayed in the same spot. When it rains it softens up but as soon as the sun come out it’s hard as a rock. I would purchase this product again

April 28, 2026

From influenster.com

Nice product

[This review was collected as part of a promotion.] This product is great to use on areas that you don't want the mulch or rocks moving around. It's instructions are easy to read. I used it inside the house for a small project with rocks. It did take a few days to cure because it wasn't in the sun. After it was dry completely, it held all the rocks together. The concentration is good and it is not that messy.

April 28, 2026

From influenster.com

works great

[This review was collected as part of a promotion.] i’m extremely surprised at how well this worked and how easy it was. I actually sprayed this a few weeks ago and my mulch has stayed right where it is supposed to. it drys clear, and doesn’t leave behind any residue which I was a little worried about. a little goes a long way, and I highly recommend

April 28, 2026

From influenster.com

Neat product

[This review was collected as part of a promotion.] Really creative product. Works good and easy to apply. I love the results of it actually staying because we get a lot of wind in our area. Seems like it will hold up well!

April 28, 2026

From influenster.com

Perfect for Gardening

[This review was collected as part of a promotion.] This mulch and rock glue is a game changer for landscaping! I used it by mixing with small pebbles to use for a foundation for a small starter flower pot garden in my front yard and placing large pebbles on top that I can change when needed. It works great. My pots and rocks haven't moved at all. It is simple to use as well. I plan to use it more for a bigger garden later in the summer, but for now, it worked perfectly for my starter garden and...

April 26, 2026

From influenster.com

convenient, safe, and effective

[This review was collected as part of a promotion.] This product works really well, holding my garden in place and keeping the rain from washing out my flowers. It is safe for my dog's and is not harmful to my plants. No bad chemical smell and it dries clear.

April 26, 2026

From influenster.com