Wet & Forget Mould, Lichen & Algae Remover, Outdoor Patio Cleaner, Black Spot Remover, Bleach Free, 2L

This is the second time I have purchased wet & forget and the results have been favourable in terms of eventually getting rid of algae, lichen and even moss for a period of time. I originally bought this to treat my block paving drive as I had what I'd described as white chewing gum stains and black spotty marks all over the area. I tried power washing and scrubbing with detergents but nothing seemed to work and then a friend advised to get wet & forget. I was a bit dubious it isn't a cheap option but I decided to give it a go and after 3-6 months I realised pretty much all the stains had gone! Now it certainly does not work overnight but I treated once and left (and genuinely fogot about it)... all the marks had gone, see attached pics of before and after treatment. Since then I have used my second container on my roof and even on a very old roof with high levels of moss growing. Here I did remove some of the moss with a plastic scrapper but the rest was down to spraying this product. It is so simple to do, just dilue 1 part wet & forget to 5 parts tap water, mix and then spray generously on the affected area. It is advisable to do this is dry conditions or when rain is not forecasted that day. Then wait, and over time you will see a difference.To conclude I am going to give this a full 5 stars it does actual work well. Only time will tell if it continues to work but in the case of my drive it remains clear of these marks after over a year+ period so I am genuinely happy with the results. It is not a cheap solution (there are lower cost alternatives which I have not used) but this one certainly delivers.

We have used this a while. Our block paving looks amazing. You must be patient as the rain activates the product. We use an electric sprayer to apply . Very effective. You need to dilute it to the right strength. Would rec9mmend if you are patient

Update - Have added photos for garden path. Original condition and now 6 months later.Had 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!

A repeat purchase of a good product which does what it says. It is easy to use and has been effective. Good value for money and keeps for a long time.

**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. :)

I have used this product on my touring Caravan before and have been pleased with the results. I mainly use it on the roof as it stops the growth of mould / moss especially around the roof lights & TV Ariel joints. I always spray a layer onin the winter as this stops build up of moss /algae etc when the van is in storage. It is also useful to spray a bit around widows as this stops any build up of algae etc over the non use winter period. I don't cover the van anymore now I am using wet & forget as I am satisfied that no green residue of any kind will get a hold. Its worth the extra money in the long run as there are cheaper products out there but one coat of this will be better than three coats of a cheaper product. You get what you pay for. Follow the instructions for best results. The more coats you put on the better long term results.

Seems to be good,no faults with suppliers or delivery

Easy to use, goes quite a long way, and rid my drive of green algae. Done a few months ago, and still seems clear. Good value for money.