How to use wet and forget on wood?

Author: Alessia Rogahn PhD  |  Last update: Sunday, July 5, 2026

Mix 1 part Wet & Forget Concentrate with 5 parts water into a pump sprayer. Spray the fence, thoroughly saturating the surface, and then just walk away. After a few weeks, your surfaces will clear up, and the stains will be removed. Allow the fence to thoroughly dry before sanding, painting, staining, or sealing.

What is the best time to use Wet and Forget?

When is the best time to apply the product? On a cool dry windless day, when no rain is expected for 4-5 hours. Often the evening is best when evaporation of the product is minimal. This will ensure that the surface to be treated stays wet with Wet & Forget for an extended period.

Do you have to rinse Wet and Forget?

Apply Wet & Forget Outdoor as soon as the weather warms to remove unsightly stains and growth that have been hiding in winter. Spring rain showers work with the product to clean dirty outdoor surfaces for you – no rinsing or scrubbing required!

How long do you let Wet and Forget to sit?

Spray your shower down with Wet & Forget Shower after you use the shower. The next day, simply rinse the surfaces clean with water before showering. Do this once each week to keep your shower spotless. For best results leave on surface 8-12 hours (but no more than 24 hours).

What is the problem with Wet and Forget?

Wet & Forget is highly corrosive, and can seriously harm your skin or eyes.

The BEST way to REMOVE green algae in gardens!

What if it rains after applying Wet and Forget?

Thoroughly saturate the surface with Wet & Forget Outdoor. Then, allow the product to dry. Wet & Forget will work over time with the rain and wind to gently clean up the green and black stains.

What precautions should be taken during Wet and Forget?

P264 - Wash hands thoroughly after handling. P270 - Do not eat, drink or smoke when using this product P280 - Wear protective gloves/protective clothing/eye protection/face protection. P303+361+353 - IF ON SKIN (or hair): Remove/take off immediately all contaminated clothing. Rinse skin with water/shower.

Do you pressure wash before Wet and Forget?

It's not necessary to clean the surface before application. Apply Wet & Forget to a dry surface. Can I apply Wet & Forget with a hose end sprayer or a pressure washer? We recommend applying Wet & Forget with a pump-up garden sprayer, backpack sprayer or a low-pressure agricultural sprayer.

How long does it take to see results from Wet and Forget?

It depends on the type of growth and the intensity of the contamination. If it's a new growth or a small amount of staining you can see results within days. Otherwise, it may take 2-3 months to see improvement. In the very worst case scenario, where contamination is extreme, it may take 6-12 months to work.

What is better than Wet and Forget?

Bio-Shield® is Proven Effective

Bio-Shield will give a powerful, rapid kill of moss, fungal, algal and lichen growths, and can prevent re-growths. It can be used to clean any exterior surface.

Does Wet and Forget really work?

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.

Can you use Wet and Forget without diluting it?

A: No, you have to dilute it with water in a spray.

How to remove algae without scrubbing?

Determine how severe the algae or other biological growth is. For heavy soiling, dilute 2 parts water to 1 part GK Greener Kleener. For light to medium soiling dilute 3 parts water to 1 part GK Greener Kleener. Easily apply the formula to the affected area using a garden sprayer or a brush.

Can you use a watering can with Wet and Forget?

APPLICATION: Using either a Wet & Forget Sprayer or watering can, thoroughly saturate the dry surface to be treated with the Wet & Forget mixture (do not hose first) so that maximum benefit is achieved.

Does wet and forget damage plants?

Wet & Forget is non-systemic; therefore, if there is runoff into the garden beds, it will not be absorbed into the root system and will not damage plants at all. Wet & Forget won't affect plants unless you accidentally spray directly onto them, which can cause spot burning of the leaves.

Do you have to wash off wet and forget?

After Wet & Forget Outdoor dries, it teams up with the weather (rain, wind, sleet, snow) to eliminate nasty growths – no scrubbing required! Wet & Forget removes unsightly growths on outdoor surfaces including: Green algae.

What is the difference between wet and forget and wet and forget rapid?

About the product differences:

Does Rapid Application cover less of an area than the original 5L Wet & forget concentrate? No, the 2L Rapid Application and the 5L Wet & Forget concentrate cover the exact same area, it is just the dilution rates that are different. They both cover a minimum of 100sq metres.

What are the dangers of Wet and Forget?

Hazard: The hose end nozzle clip can dislodge and allow the cleaning solution to spray on users, posing a risk of skin and eye irritation and other injuries.

What time of year should I use Wet and Forget?

Make sure you apply Wet and Forget on a dry day, without any rain for at least 4-5 hours (summer months with the least chance of rain are preferable).

Can you use Wet and Forget if there is no rain?

Make sure you apply Wet and Forget on a dry day, without any rain for at least 4-5 hours (summer months with the least chance of rain are preferable). Always use 5 parts water and 1 part Wet and Forget. Apply using a garden sprayer or as liberally as possible to get an even coverage.

How long does it take for wet and forget to start working?

If it is really light you will see results within days. Otherwise, it may take 2-3 months to see improvement. Your concrete may turn reddish brown when Wet & Forget Outdoor is applied. This is normal and shows you have a good reaction.

Can you spray wet and forget on wood?

Yes. Wet & Forget Concentrate is an easy spray-on-and-leave formula that works with Mother Nature to eliminate ugly stains on wood fences. The formula cleans the fence for you – no scrubbing or pressure washing is required!

What happens if you get wet and forget on your skin?

May cause skin irritation to sensitive individuals. Eye Effects May cause eye irritation. Skin Effects May cause skin irritation to sensitive individuals Inhalation May cause nose and throat irritation.

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