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Spray and Clean Composite Deck Cleaner

Spray and Clean Composite Deck Cleaner cleans the spots and stains caused by mold spores that are deep set within the pores of the composite decking, there is a reason this is the best selling composite deck cleaner on the internet....it works!

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Winter Shipping Special

We are offering a discounted flat rate shipping for the Winter of 2016. Ground shipping to anywhere in the continental US is now only $9.99! .

All orders also include a free gift sample of our new Wash Safe Exterior Cleaner.

Read more about our Money Back Guarantee.

Attention Contractors: Wash Safe is now offering contractor pricing. Find out more here.

Got a question? Check out our FAQ section.

Wondering how much product you need? Click on "additional info" below or check out our master coverage chart.

You can order online 24 hours a day or look for a retail location near you.

We'll send product same day or next day. Read more about our shipping policies.



Do you have a composite deck that has black stains and spotting that you just can’t seem to get cleaned? Have you tried just about every possible deck cleaning product and option but just can’t seem to get the deck any cleaner? That's because of the porous nature of composite decking, the stains are “deep set” in the pores of decking, where you would think it would be impossible to clean but that's not the case, read on…

Typical composite deck cleaners or cleaning agents in general only clean topically and may work well on surfaces but are ineffective at “deep set or below the surface” cleaning. These stains became a problem for composite deck customers because there wasn’t a history of cleaning the stains or a product that worked well, we understood composite decking, how it was made of a porous material and we created a product that would “penetrate” the surface unlike anything else and our Spray and Clean composite deck cleaner continues to receive 5 star reviews and personal emails thanking us from “now happy” home owners.

Composite decking is an excellent choice for decking material it’s beautiful, durable and it resists warping, rot and wood eating insects, composite decking will last a life time or longer, it just needs an occasional cleaning just like everything else in life does.

Spray and Clean is the only composite deck cleaner capable of cleaning in this fashion. To formulate this product we had to use a small percentage of chlorine bleach but only 5%, the chlorine is transported into the pores of the composite decking by a special formula of transporting surfactant chemicals that are only used in Spray and Clean where it can remove the stains within the pores of the decking without scrubbing.

Watch the stains disappear from after we apply our composite decking

The picture shows the just how fast composite deck cleaner works to remove stains caused by mold and mildew.

If you have this problem on your composite decking, try Spray and Clean and your worries and stains will go away. Most customers are so frustrated and afraid to try yet another deck cleaner because they have tried everything and nothing has worked. That's our typical customer who is now a satisfied customer. We also stand behind all of our claims and products and offer a full refund if you are unhappy for any reason with the results. Give us a shot; you will be glad that you did.

There is no need to let Spray and Clean dwell on the surface for more than a minute or two unless your deck is "heavily soiled."

Once you have cleaned your decking with the Spray and Clean, we highly recommend that you seal your deck with our Composite Deck Seal. If your deck had been sealed from the beginning, your deck would have never obtained the mold spores with in it.

A note about sealing: no matter how you prepare you deck for sealing or what sealer you apply, it is imperative to rinse the cleaning products off of your deck thoroughly before applying any sealer. Any remaining cleaning products on your deck will cause the sealer to fail.

How long can I expect a cleaning and sealing of my deck to last?

Our composite deck cleaner penetrates into your deck and cleans the spots and stains caused by mold that are deep set within the pores of the composite decking. However, the mold can live beneath the depth to which our cleaner penetrates. Unless you are able to seal the sides and underside of your deck, 100%, there is a chance that the mold spots will return, although much less than you originally noticed. In this case, you can apply our cleaner over the sealer, although you should dilute the cleaner with one part cleaner to four parts water, spray it on as you did when you originally used our Composite Deck Cleaner, and use it to rinse away the stains. Every cleaning you do in this manner will reduce the chance of the spots coming back.

Additional Info

Additional Info

Uses Use to clean stains caused by moss or algae, or other organic debris from your composite decking.

Each gallon of Spray & Clean will clean 250 sq. ft. of decking but the product may be diluted in different ratios depending on the condition, age, time of last cleaning and brand of your decking. In extreme cases Spray & Clean should be used straight without dilution. For routine (maintenance type) cleaning Spray & Clean should be diluted 4:1 (4 parts water 1 part Spray & Clean, in that ratio 1 gallon of Spray & Clean would make 5 gallons of cleaning solution.

(dilution chart based on visibility of mold stains)

Extremely Visible = No dilution

Very Visible = 1:1 (equal parts)

Visible Stains = 2:1

Just Became Visible = 3:1

Routine Cleaning 4:1


After deciding on the dilution ratio mix Spray & Clean with water (warm/hot if possible) and put in a garden style pump sprayer, saturate the stained decking allowing the product to be absorbed by the decking, stains will start to disappear on contact, when completed rinse deck off with cold hose water, for stubborn stains reapply, soak deck for 2 hours or overnight if needed, a light pressure washing or use of a scrub brush may assist the cleaning process.

There is no need to let Spray and Clean dwell on the surface for more than a minute or two unless your deck is "heavily soiled." For a routine cleaning you can simply spray our cleaner on and then rinse it off with a hose. We recommend soaking for 2 hours or overnight only if your deck has large amounts of visible stain.

If this is the first time you have cleaned your deck it's possible that there are deep set mold stains that the solution didn't reach these may rise to the surface and the mold stains would need to be cleaned again, this may happen once or twice after the initial cleaning, once that phase is over to keep your composite decking looking good, a routine cleaning is necessary, this can be very simply done by diluting 4 parts water with 1 part Spray & Clean and spraying your deck every 60 days or so during the season, spraying your deck an hour or two before an oncoming rain storm is a perfect way to rinse your deck naturally.

Features Spray and Clean Composite Deck Cleaner is safe, effective and couldn't be easier to use.



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