Wet & Forget 5 Litre Mould, Moss, Algae & Lichen Remover

At Clarkes of Cavan, we are passionate about getting your order to you quickly and safely and we understand it is important for you to know when your order will be delivered.

Delivery Cost & Times

Free delivery on orders over €99 applies in most cases (Ireland), where a product is excluded from this it will be noted on the product page. Some items are large and cannot be sent for free. Standard delivery costs apply to all other countries.

We are proud of our fast delivery process. If your order is placed before 2pm we will make sure that it is dispatched the same day*. You will be provided with tracking information so you can keep an eye on your order at all times. Delivery of Bulk items (Pallet) may take a day or two extra.

Some items we sell will take more time because of size and dispatch location. This will be noted on the product page or on checkout.

Tracking Information

When your order is send you will be provided with tracking information from the relevant courier. This tracking information will be sent to the email provided when on the account registered, or the email used in the checkout process.

Clarkes of Cavan use An Post, UPS, Royal Mail and DSV pallet delivery.

Returns Policy

For full information on our returns policy please visit our refund and returns policy page.

Need Help?

If you still need further assistance regarding your delivery please contact the online department on 049 433 2166 or via email at online@clarkesofcavan.ie

Benefits of using Wet & Forget Outdoor Cleaner

• Bleach-free, non-acidic and phosphate-free.
• 1-Gallon container makes 6-Gallons!
• Requires no scrubbing, no rinsing, and no pressure washing.
• Conserves water.
• Safe for virtually any outdoor surface.
• One-step application: Simply spray and walk away!
• Eliminates even the toughest cases of moss, algae, lichen, mold or mildew.
• Long-lasting: Keeps the surface clean for at least 1+ years in most cases.
• Wet & Forget is an EPA registered product. Many products on the market are not.
• Bio-degradable.
• Unlimited shelf life.
• Safe to store in the sprayer after mixed.
• Wet & Forget Outdoor has a pH level of 8, while pure water has a pH of 7. Most products on the market have a pH level of 10-13, which is 100 – 10,000 times more alkyl than Wet & Forget Outdoor.

"Our roof looks better than most that have had their roof pressure washed a year ago."
We have been using Wet & Forget for about 6 years. Living in SW Florida our tile roofs start to get moldy and dirty after about a year and half. Many have hired someone to pressure wash their roofs at a cost of at least $300. Our roof looks better than most that have had their roof pressure washed a year ago. We apply Wet & Forget each spring just before the rainy season starts. I do not have to walk on our roof because my pump I use will reach our entire roof from a step ladder. Many know that walking on a tile roof may cause the tiles to crack and break. Fixing broken tiles can be expensive. I have recommended Wet & Forget to many others and they are extremely satisfied with the results. It is well worth the cost of this product. Just make sure you follow the directions exactly or it will not work as it should.
Steve R. | S.W. FL

"I sprayed Wet & Forget on and left it, I looked up later on and I said what the heck happened, the lichen was gone."
My vinyl siding was a mess. So I thought I’ll try Wet & Forget on it. The rain gutters they were almost black. And sprayed this stuff on and it came off and is clean. My vinyl railing would get green after the fall and winter. I couldn’t get in there with a tooth brush. And by gosh now in the spring I don’t have that problem, the green is gone! Lichen was eating into my roof’s shingles. I didn’t want to replace the roof. I sprayed Wet & Forget on and left it, I looked up later on and I said what the heck happened, the lichen was gone.
Peter C. | Harrington, Maine

"I was absolutely floored."
Just spray it on and forget it. Literally mix the solution put in a sprayer, spray on stones and you leave. The product works over time. I treated gravestones after Memorial Day in June last year. I came back in the fall and I already could tell a difference in all of the stones. It was incredible. I was completely blown away by the difference in the stones going from when I applied to when I saw them this year. I was absolutely floored.
Tom A. | Waverly, OH

"Wet & Forget is a keeper! You'll be pleased with the results. Even Costco now carries it."
We had a very wet winter last year and the moss build-up on our front steps was out of control. Moss can make stairs and sidewalks very slippery. So I was determined to correct the situation before someone fell and got hurt.

I used Wet and Forget as directed and it worked its miracles, just as described on TV. At first, it looks pretty ugly if your moss is on cement because everything turns brown. But then the moss disappears - and it stays gone. I also used it on some rubber outdoor mats with similar results. They advertise that rain actually re-activates Wet & Forget. And I guess it's true. Another year has passed and the moss has not regrown on my front steps.

I just bought more and did the cement sidewalk on the side of the house, which also was also overcome with moss and an accident waiting to happen. Wet & Forget is a keeper! You'll be pleased with the results. Even Costco now carries it.
t. Buff

"it was like magic..."
After the rain, bingo! Everything was clean. Every place that the rain washed, it was like magic, it was gone! It's all in the name! My patio furniture never looked this good! I couldn't get in there with a scrub brush, but the product cleaned everything.
Ron B. | Kildeer, IL

"It's the best thing since grilled cheese!"
I sprayed Wet & Forget on the south side of my house four years ago, and it's still clean. I also applied to my gutters with black streaks, and the streaks get lighter and lighter over time. It's the best thing since grilled cheese! I saw a little old lady up the street scrubbing the side of her house. I went over there and applied Wet & Forget to her siding, two years later the siding is still clean!
Bob W. | Winfield, MO

"One year later, guess which section of the roof needed no cleaning?"
I used this stuff last year after pressure washing my White barrel tile roof on my Florida house. I only had one gallon, and that's not nearly enough to do my house. One year later, guess which section of the roof needed no cleaning? While the rest of the house suffered from black mildew.

I also applied a little to my sidewalk and entryway. They also remain 100% clean and nice looking after 1 year. A big change from the past, where the sidewalk needed pressure washing every 3 months. 
Cyndi L.

"This is one of the best products I have ever used."
I had read positive reviews of this product, but it exceeded my expectations. It cleaned up algae, mildew, and moss from numerous surfaces around my property - natural stone, wood decking, real stucco walls, etc., etc. It worked equally fantastically on all materials and in days (rather than the weeks that the label promised). I am now optimistic that it will do as promised, and completely retard the re-appearance of the algae, moss, and mildew. This is one of the best products I have ever used. No scrubbing - just spray on with a garden sprayer and leave to dry. Terrific!!
T. Bill

Application: Apply Wet & Forget Outdoor to a DRY outdoor surface until thoroughly saturated. Wet & Forget is best applied in cool, dry conditions to avoid evaporation. Do not use if rain is in the forecast within 4-5 hours. Avoid application during the warmest part of the day or hot days, to avoid evaporation which can diminish results. Temperatures need to be above 32 degrees during application and for approximately 5 hours after.

Reaction Time: Once treated with Wet & Forget, green growths such as algae will clean up within a few days or weeks in most cases. Black stains caused by mold and mildew can take a month, sometimes several months. Worst-case scenario, heavy black stains that have built-up for many years can take six months - 1 year to come clean. Be Patient. Good Things Take Time.

You'll never have to wait for results after your first initial cleaning; you'll move to an annual maintenance application to keep those surfaces mould-free.

Maintenance: Repeat application once a year or at the first sign of new moss, mould, mildew or algae growth.

Treating Moss: To get rid of moss, thoroughly saturate the moss making sure the Wet & Forget Outdoor soaks through and comes in contact with the surface the moss has attached itself to. Over the next few days or weeks, you'll notice the moss turning brown, curling up and detaching from the surface. The wind and rain will help wash away any remaining moss.

Treating Lichen: Lichen is a complex combination of fungus and algae that have learned to live together, forming a unique type of growth. Lichen can cause pitting on outdoor surfaces. The symbiotic relationship between the fungus and algae makes lichen very hardy and difficult to get rid of. But don't worry--even this robust growth is no match for Wet & Forget Outdoor. Use a garden sprayer to thoroughly saturate the lichen with a solution of 1 part Wet & Forget Outdoor and 5 parts water. Wait 15 minutes, and spray a second time. The outer shell will soften during this time so Wet & Forget can penetrate the lichen's inner layer. It is best to spray lichen on a day that is not too sunny, to prevent rapid evaporation and to allow Wet & Forget more time to work.

Where To Use Wet & Forget Outdoor

Wet & Forget is non-acidic and contains no bleach; therefore it can be used on ANY outdoor surface material. Some of the more popular surfaces include Roofs, Siding, Decks, Walkways, Driveways, Brick, RVs, and Boats.

For large surfaces and high elevations, we suggest using our Wet & Forget Outdoor Hose End which reaches areas up to 30', perfect for roof cleaning.

Exterior Home Surfaces: Covered Porches, Decks (All types), Downspouts, Driveways, Eaves, Gutters, Patios (All types), Pavers, Roofs (All types), Screens, Shingles (All types), Sidewalks, Siding (All types), Steps

Lawn & Garden: Awnings, Diving Boards, Fences (All types), Fountains, Gazebos, Greenhouses, Hammocks, Lanais, Lawn & Patio Furniture (All types), Outdoor Mats/Rugs, Outdoor Pots, Patio Umbrellas, Plastic Playhouses, Play Equipment, Pool Liners, Pool Surrounds, Retaining Walls, Shade Sails, Storage Units

Marine: Aluminum, Boat Bilges, Boats, Boat Carpeting, Boat Seats, Canvas, Fiberglass, Inflatable Boats, Sails, Teak

Camping: Cabins, Outdoor Furniture, Pop-Up Campers, RVs

Other: AstroTurf, Basketball Courts, Cars & Trucks, Log Homes, Monuments, Tennis Courts, Tombstones

Materials: Aluminum, Asphalt, Brick, Cement, Ceramic, Clay, Composite, Concrete, Dryvit/EIFS, Fabric, Fiberglass, Flagstone, Limestone, Marble, Metal, Natural, Painted, & Stained Wood, Painted Surfaces, Plastic, PVC, Rubber, Sandstone, Slate, Steel, Stone, Stucco, Teak, Textured Surfaces, Tiles, Tin, Vinyl

Commercial: Airports, Amusement Parks, Cemeteries, Freeways, Hospitals, Hotels & Motels, Parks, Public Buildings, Schools, Stadiums, Zoos...

and virtually any other surface you can think of!