🌿 Spray. Forget. Flaunt. The effortless clean your outdoor space deserves.
Wet & Forget Mould, Lichen & Algae Remover is a 2L bleach-free spray designed for hassle-free outdoor cleaning. Its gentle, pH-neutral formula safely removes mould, algae, and black spots from a wide range of surfaces without scrubbing or rinsing. Activated by natural weather, it delivers long-lasting results, making it the go-to solution for maintaining pristine patios, roofs, solar panels, and more.
Product Name | Mould Lichen and Algae Remover |
Volume | 2 litres |
Units | 2000.0 millilitre |
Brand | Wet & Forget |
Format | Spray |
Country of origin | New Zealand |
M**H
Magic liquid to clean so much!
Has moss cleared of rear extension roof and sprayed this wonder formula! 6 months later the roof look so much brighter and cleaner. Used it in garden slabs and some look nearly new, some still have marks but they will need a second treatment as they were considerably worse. Easy to mix up and simply spray. Didn’t cause any damage to plants even when I accidentally sprayed some. This stuff is a miracle liquid, jet washed drive and sprayed this to remove black spots! Gone! Use as per instructions, I spray the garden slabs every so often with the hose and reactivate the chemicals. Works a treat! Very highly recommended!
B**W
Invisibly slow - but remarkably effective
Used on our largish block paving driveway which was absolutely plastered with heavily entrenched lichen. Dead easy. Followed the instructions. Didn’t use a more concentrated solution, or anything else, just did what it said. And then . . . nothing. No noticeable improvement for weeks. For so long, in fact, that I stopped checking.Until post winter, about 9 months later I guess, when there were no cars on the driveway I suddenly noticed that it had all gone. Completely. I’m astonished enough to actually leave a review.I’ve done the pressure spray approach before. It’s painfully slow and messy, especially if you do it properly and resand the gaps and seal the blocks. My pressure hose deals with dirt, but struggled with the lichen. So, in short, this is vastly easier and vastly faster and vastly more effective. Just vastly slower. So it’s a once a year thing - do it once, takes 20mins and never ever needs thinking about again.
M**I
easy to apply and effective
Brilliant for removing mould / green algae from outdoor wood work, fencing, paths etc. Just spray or paint it on and the next day the natural appearance is restored. Easy to use and has not damaged my plants.
D**N
So easy to use — results without scrubbing
I used this on an old patio with a lot of built-up algae and mould. I followed the instructions, sprayed it on, left it for a few days, and then gave it a hose down — no scrubbing required. The results were genuinely impressive. You could see a clear difference, and it’s still improving with time.Application was quick and hassle-free, and a little goes a long way. It’s a brilliant low-effort solution for patios, walls, or garden paths. Definitely something I’ll keep on hand for outdoor cleaning. Highly recommended.
W**E
**UPDATE** Genuine Review of a Verified Purchase
**Scroll down to the very end for my UPDATE.To any reviewers that discredit my review and claim it's not real, sounds too vested in this product.Here's my HONEST original review:Having just used this, I can honestly say it looks worse on our indian limestone. I'm hoping it look better soon. Having done a lot of research before buying this brand, I've learnt a few things:• If you plant to treat lichen I.e. black spots on your stone, do a second treatment in rapid succession after the first. About 20 minutes apart.• The product states to make a mix of 1 parts concentrate to 5 parts water. Make a higher concentrate if you want a more rapid result.**Some reviewers have said it can take atleast six months to notice a difference.• Power washing after using this defies the point of using this product. Not only will you get this toxic substance airborne with a power wash, but, using a powerwash alone, will gain the same result without buying this solution.• I'm going to reapply another treatment tomorrow.There is no way I'm waiting six months for a noticeable difference. You might find you need to order two drums if you want to apply a second treatment right away. This drum makes about 7 applications. i.e. one full watering can (10 litres) equals 1 application.This means 1 part solution to 5 parts water.• You would be able to extend the usage of the solution by using a knapsack, but you will end up getting the solution in places you may not want it, due to the finer mist. Such as a fishpond as in our case or on our ancient dry stone wall which is teeming with beneficial insects which pollinate our fruit and veg.• The substance is toxic to wildlife when wet. Pets should be kept indoors, they say, until it's dry.Yes, it will make a difference to the local fauna in the shorterm, anything that crawled, slithered or scuttled on it, lost it's life.**ALL OF THE ABOVE WAS DEDUCED DIRECTLY FROM THE INSTRUCTIONS ON THE DRUM. IT CAN'T BE DISPUTED!!!****UPDATE**Just to make it clear, I followed the instructions to a T:Application on a DULL day. No forecasted rain for the prescribed time.This Product takes MONTHS to work. This is my honest review.I gave up seeing an effective difference with this product in the short-term. By short term I mean 3 to 4 weeks. I couldn't see it making a rapid turnaround even if I left it a month or two longer.If you want an immediate difference, to enjoy your garden, for example, in the summer, you may have to resort to more drastic measures.Here's what I did:• I used a bottle of undiluted household bleach to one slab as a "test slab". The bleach cleared the slab by the following morning.• I then applied a 25/75 solution to the rest of the slabs of bleach to water.The result is far better than this solution. The 25/75 mixture didn't give the same results as a 100% bleach. It is however very passable and looks like one year old slabs as opposed to the 'freshly laid' look I was looking for.So to round off, if you are resolved to using this brand's less abrasive solution, plan ahead. Preferably 6 months in advance.If you want an immediate change, try another mixture. The bleach method worked better for me.I really hope you've found this useful. :)
A**R
Best product for cleaning patios etc.
Have used Wet & Forget before and would definitely recommend it. It does a fantastic job without scrubbing or pressure washing.Just apply and Forget it. The results are not instant but end result is first class.
V**4
What a difference
I’m putting a 4 star review because we’ve only used it on a rough cast wall, with hard landscaping below. No plants underneath.In that situation it’s absolutely amazing. We sprayed it on, during the recommended weather conditions and the results on the wall are excellent.Highly recommended.
E**Y
Great for fences
Perfect for fences, not strong enough to clean up my patio. Really easy to use, sprayed out well from the Spear and Jackson sprayer I bought with it. Cleared the green algae off the fence very quickly and effectively.
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