Customer Reviews for 30 Seconds 1 Gal. Outdoor Cleaner Concentrate (4-Pack)

I am staining a 5 year old screened in porch and ramp. I have no gutters along ramp by the house so mold builds up quickly and it was black. This brought it back to almost new. Applied 1.1 and used a handled deck brush from HD to apply. I waited for minute and the scrubbed with deck brush and rinsed. Had a few spots that I had to do twice but I did have some heavy mold, like I said. I did not have a pressure washer but this did just fine. About 2 hours to really get the long ramp and banister good and clean. Started staining banister this morning and will stain ramp tonight. The rest I can do a little at a time depending on the weather and dampness. I would use again. It did take 1 gallon to do the ramp and banister. No odor that I would tell. Did not burn or sting. I did put on old clothes but saw no problem when I got through.

When we installed our redwood deck, we treated it with waterseal however after 3-4 years with no subsequent re-treatment, the timber had greyed so we set about refinishing the deck a couple of weeks ago. The first stage involved pressure washing the grey colored deck with water. After this was dry, we then cleaned the deck with 30 Second Concentrate which brightened the wood and helped lift out some of the old waterseal. We decided to go with the 30 Second Concentrate after reading the reviews on Home Depot's website and we weren't disappointed. We diluted the 30 Second Concentrate 50:50 with water and sprayed it on with our deck sprayer and scrubbed it with a long handled nylon kitchen/bathroom brush before rinsing it off with water from the pressure washer. Working in the sun, we worked down the length of the deck planks, treating an area about 24" long and 4-5 deck planks wide at a time. Any more and the concentrate will soak into the deck planks and you'll spend more time respraying the planks to keep them wet as you scrub them. One gallon of concentrate treats about 200 square feet once it is diluted, so we ended up using 1.5 gallons for our 322 square feet deck. The results of the 30 Second Concentrate was a brightening of the deckwood from its pressure washed finish, although it was nowehere near as much of a difference from the first treatment of pressure washing the grey deckwood I was glad we did it as I feel we got the deck wood as clean as we could before re-sealing it. Once this had dried, we applied a coat of Honey Gold tinted waterseal using a pump deck sprayer and a 3" chip brush. We applied the waterseal working down the deck again along the full length of the planks just as we did with the 30 Second Concentrate cleaner. Our deck used less than a gallon of waterseal with the spray and brush method and we were very pleased with the results as it has left our deck looking good as new as can be seen from the before and after pictures. All in all, about a weekend's work.

My wife found this on a pop-up camper forum for cleaning canvas and thought I should try on the deck. The dirt/mold DISAPPEARED on the deck in less than 30 seconds. I previously had scrubbed with straight bleach in desperation with only marginal results. We used it on canvas too. Great product. NO scrubbing required. Spray, blink your eyes, wash off. This does contain TSP, so it will dull paint finishes some (perfect for prep of new coat of finish/paint). Picture shows (foreground) scrubbed with bleach, (center) untouched, (distant) 1 minute after applying this product. Wow! Second picture - finished result after rinsing.

I love this product. It really works well.

Didn’t do anything. Sprayed on my driveway. Rinsed it off. Nothing!

I bought this and followed the directions with a sprayer. So the 30 second cleaner says to leave on 15 minutes - huh? I did that. Nothing washed off the driveway I had to pressure wash it any way. Basically it’s overpriced bleach.

Great product. Highly recommended!

It does not clean very well I used it twice on my driveway. Will never buy it again amd will discourage others from purchasing it

Wish that I had found this product years ago.

The algae/mold does not come off after 5 minutes wait as claimed. Needed to use a brush to completely clean.

Excellent product works just as described on my vinyl siding use 12 gallons to complete a entire house faster than a power washer

Didn't clean as quickly as expected.