30 SECONDS Outdoor Cleaner, 1 Gallon Concentrate for Concrete Surfaces, Cleans Algae, Mold, Mildew Stains

This 30 second cleaner is great on vinyl siding, as an general all purpose outdoor cleaner, no leftover residue and doesn't have a strong chemical smell like most others. Mix it in a garden sprayer and you are ready to clean.

The product worked really well. I had tried the day before I bought the product to use a power washer on my fence, which only caused damage. The 30 Seconds worked really fast. In a couple of spots, I had to soak with a little more solution, but the fence hadn't been cleaned in a few years. I would use it again. Make sure you wear a hat, gloves, mask, safety glasses and old clothes when you use it. Fumes are strong but not overpowering and outside, the wind can blow the solution into your hair, eyes and onto your skin.

Amazing to see the stains off my trex deck disappear before my eyes!!!! Would recommend to spot check and rinse

This stuff works so well. Just put it in my pressure washer soap dispenser and sprayed on. Only had to rinse over once. But most spots were already gone.

This is an amazing product. I was skeptical at first but it has worked wonders. Applying it only requires a pump sprayer and water. If you have heavy stains I would leave it on for a minute or so.

Works Amazingly well !! Buy it

This stuff worked wonders on my car port! We could literally see years of mold/mildew(??) and staining melting away before our eyes!

Wow !! What a Difference this product makes to our Brick Patio !! Mix 50-50 with water apply with a garden pump sprayer. I let it sit for 15 min after applying, then scrubbed over with a push broom, rinsed with water and it was incredible how well it worked ! Ready to apply sealer and enjoy a clean patio again. 5-Stars !!!

This is the 2nd review I am leaving and still have not heard back from anyone about my claim. This was an online delivery, %26 the outdoor cleaner concentrate was delivered damaged. Driver left bag on its side %26 when I went to pick it up, it was leaking. It leaked all over my brand new Luxury Vinyl Plank flooring (installed in March, 2025) from the front porch to my kitchen. I have sent pictures of the damage %26 left numerous messages to Walmart's claim offices, but my calls have went unanswered. The Walmart Manager, %26 Walmart Claims Employee have reached out to me %26 I have returned their calls %26 left numerous unanswered messages, emails %26 pics. I am very fed up.

Does not work don't waste your money! Followed directions car as stated and it did not remove any of the grim off of my patio.