Costco Wet and Forget Outdoor Moss, Mold, Mildew

Costco sells the Wet and Forget Outdoor Cleaner for $29.99. Scroll down for photos. It’s that time of the years already! Costco has moved in their gardening and outdoor products. Even though we are 6 – 7 weeks away from springtime, it’s a good time to start preparing for that “Spring Cleaning”. Pick up a bottle of this Wet & Forget Outdoors now. This bottle comes with the hose bib attachment to make it really easy. If you don’t need the hose bib attachment, then pick up the 2 pack of bottles online (currently sold on This stuff works great for moss & mildew on the roof. Remember it does not work immediately & takes time for the moss & mildew to die. Hint: be careful around bushes & plants you want to live. Here is a little more information about this Costco Wet and Forget Stain Remover…….

  • Works on Decks, Roofs, Sidings, Patio’s, Driveways, Pavers and more
  • Sprays up to 30 Feet
  • 3,000 Square Feet of Coverage per Bottle
  • Easy Spray and Leave Outdoor Cleaner
  • Treat Large Areas and high Elevations in Minutes!

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Costco Wet & Forget 68oz Outdoor Moss, Mold & Mildew

Costco currently sells this & 2 other products online. They sells the “Wet & Forget Moss, Mold, Mildew & Algae Stain Remover 0.75-gallon, 2-pack” for $31.99 (Item Number: 361065). They sell the “Wet & Forget Outdoor Ready to Use 64 oz., 2-pack” for $35.99 (Item Number: 1232890). These 2 product have much higher ratings. The biggest complaint about this product was the hose bib. Many people had hose connection issues & spray issues, so be aware. If you can’t find this or you’re looking for some other outdoor mold/mildew stain remover, make sure to check out these HIGHLY RATED products……..

Price: $29.99, Item Number: 1219756

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2 thoughts on “Costco Wet and Forget Outdoor Moss, Mold, Mildew

  1. Wey and Forget sprayer is disfunctional. Bezel that dials positions “off, Water, On” difficult to impossible to turn under water pressure. Spayed with silicon lubricant eased the malfunction. There is a black water coduit inside the nozzle housing. This conduit shot out like a rocket when water turned on and was lost in my garden. This product is poorly designed and for me totally useless.
    Suggest you test this product for yourself. I would like a full refund for the two that I purchased.
    E Albin

    1. You can go ahead and return them to Costco. I’m sure they will give you a refund. The spray nozzle’s on these products are usually very cheap. You can’t over-tighten them or else they break very easily. Sorry you had a bad experience with them

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