There are many home-made remedies out there that claim to eliminate blankets of unwanted moss, but most simply aren’t strong enough. And standard weed killers won’t do much.
Unlike other common plants, moss doesn’t have roots for the movement of water or nutrients. Because of this moss relies heavily on constant moisture, so the key to an effective moss killer is through drying the plant out entirely.
Last update on 2020-12-05 / Affiliate links / Images / Pricing from Amazon Product Advertising API
Below we’ve reviewed some of the best moss killers out there, giving you the freedom to choose where you want this plant to grow rather than have it take over your outdoor space.
Simply wet the area for powerful, guaranteed moss removal
As one of the best-recommended products out there for moss removal, Wet & Forget is our best pick.
The 5-litre bottle is capable of making up to 30 litres of product which can then be used across an area of up to 300m². The solution powerfully removes mould, lichen and algae when applied with a pump-up garden sprayer. Unlike other removal techniques, you won’t need to use a jet wash or scrub away for hours. Made without acid or bleach, the product is completely safe to use and shouldn’t cause any damage to other plants or foliage when sprayed.
Wet & Forget can be used across a wide range of surfaces including roofs, patios, pavements, wooden decks and glass. While the product takes a period of time to kick into effect (in some cases weeks/months depending on severity), once applied it will work for up to a year before reapplication is needed.
If you’re looking for a product that won’t cause any fuss and is free from nasty, abrasive chemicals, this is an excellent option and guaranteed to kill the moss!
- Simple to use – the ‘wet and forget’ technique means the product can be sprayed onto the area and left to dry, resulting in little fuss or labour.
- A 5L bottle makes 30L of product which can cover 100-300m².
- Non-caustic, non-acidic and it contains no bleach.
- Doesn’t provide instant results – the product works over time and can take weeks/months to fully clear away moss.
Magically kills moss without the need for power washing!
Our value pick is the Patio Magic! Cleaner which won’t break your budget but is highly effective for killing moss across a range of surfaces. It can be used in both indoor and outdoor areas and as a pre-paint fungicidal wash too.
This easy to apply 2.5-litre antibacterial solution can be applied with a pump-up garden sprayer achieving results in just 2-4 days, across areas of up to 85m². Unlike other similar products out there, the solution is ready to use without the need for dilution, making eliminating moss easier than ever. You’ll simply need to apply to product and wait for it to dry without the need for scrubbing.
For the control of lichens, after application, the process will take up between 2 weeks and 6 months to take effect. The treatment won’t stain but it is recommended to test on a small area prior to use. It can be applied to a multitude of outdoor surfaces including paved areas, patios, driveways, walls, greenhouses, conservatories and even garden furniture.
- Quick results – expect to see mould diminishing after just 2-4 days.
- Antibacterial and ready-to-use formula.
- No need for scrubbing or washing – simply apply and wait to dry.
- Covers a small surface area when compared to other similar products.
Iron Sulphate is used and trusted by professionals and will effectively kill moss quickly
Iron is one of the key ingredients used across products when it comes to killing moss. Pro Kleen Iron Sulphate is one of the top solutions out there to rid yourself of this unwanted plant.
Used by professionals, it boasts an extremely powerful formula that can be applied with minimal effort. Setting itself apart from other products, Pro Kleen can be applied either wet or dry and will bring about results in as little as 2 days. As well as acting as a reliable moss killer, it also encourages the healthy growth of grass, making it great for healthy lawns with its 2-in-1 action.
The 2.5kg tub of the product can be used to treat up to 2,500m², making it excellent value for money. Recommended to be used mixed with water, once made the solution simply needs to be sprayed onto the area and left to dry.
Expect quick results without compromising the health of surrounding plants or your garden lawn.
- Promotes the health of your lawn with a 2-in-1 formula.
- Quick results – see moss clear within 2 to 4 days.
- Can be applied as it is dry or mixed with water for a wet solution.
- If you want to use the formula as a liquid solution, you’ll need to calculate your own ratios.
See results after just a few hours of use with Resolva Moss Killer
If you’re searching for an instant fix to eradicating moss from your garden at a lower cost, Resolva Moss Killer is the closest to this that you’ll get. Just 2-4 hours after application, you’ll see visible results as moss begins to diminish.
The product comes with an attached spray tool, eliminating the need to buy this piece of equipment separately. Ready-mixed, it reduces fuss and is a non-staining formula giving you the reassurance to use across paths, patios and other outdoor areas. We’d always recommend using this product on a test area prior to full use and to avoid allowing the product to come into contact with other plants.
Resolva Moss Killer contains acid as an active ingredient, so it should be noted that the smell is quite pungent in comparison with other options. For quick and effective results the spray should be applied as per the container’s instructions.
- Provides visible results in just a few hours making it highly effective.
- Non-staining formula.
- Can be used across various permeable surfaces making it great for the entire garden.
- The trigger spray tool included may cause some physical strain when used over time.
- The product contains acid so has a strong and pungent smell.
Simply spray and leave: moss killer with minimal effort
For those who are searching for a moss killer that is easy to apply and requires minimal effort, Jarder Spray & Leave is the ideal product.
The cleaning solution can make up to 30 litres and can be used to treat large areas of up to 240m². Without the need for scrubbing or cleaning, gardeners can spray this product across the affected area and wait for it to dry to bring about results. The maximum strength product can be used to also remove mould and lichen as it works across all outdoor areas.
Being biodegradable means it’s safe to use around other plants and pets as it doesn’t contain acid or bleach. Once the area of moss has been treated you can expect it to disappear within 2-3 days, making it one of the fastest working products out there.
This powerful yet safe product eliminates the need for power washing to remove moss from areas outdoors.
- Can treat extremely large areas of up to 240m².
- Works on its own without the need for power washing or scrubbing.
- Results can be seen in just 2-3 days thanks to its incredible strength.
- May not be as effective across wooden decked surfaces.
How To Remove Moss From Any Outdoor Surface
If you’re hoping to remove unwanted moss from an outdoor surface there are a number of steps you’ll want to follow for the most effective treatment. While moss can certainly be welcomed across some outdoor environments and even adds to natural beauty in woodland areas, for many of us in our own gardens, it’s certainly not wanted.
Not only is the plant a significant eyesore, but it can also cause structural damage to outdoor areas such as roofing.
Thankfully with the right moss killing product, it’s relatively easy to rid yourself of. Though if you’re treating larger areas with greater moss coverage, you may need to put in a bit of physical graft too.
Avoid traditional DIY ‘solutions’
Most people will try to use methods to remove moss that can actually worsen the problem. Power washing should be avoided when trying to remove the plant as it can cause damage to fragile pavements such as shingles. And, while bleaching methods might initially help the problem, run-off from the product can kill off surrounding plants and the moss can easily grow back after a short period of time.
Use a rated product
We’d always encourage gardeners to opt for a professional mould remover product for outdoor use. As seen from the list of products above there are plenty of options if pesky moss has made an unwanted appearance across any of your outdoor areas.
All of the products that we’ve included in our list above have great reviews all-round and are recommended as professional moss killing products.
How Moss Killer Products Work
As mentioned above, the best way to kill moss is to deprive it of the moisture it requires to thrive. Most of the moss killing products out there contain the active ingredient iron, which will dry out the plant over time.
The products above are all applied in the same way with some differing slightly in the sense that they can be applied wet or dry. Generally speaking, the best way to apply one of these products is to use it as a wet solution that can be sprayed. Some moss killers come with a ready-to-use spraying tool attached for ease. Otherwise, if not, be sure to invest in this bit of kit that can be reused in the future.
How to Apply Moss Killer
All of the moss killers we’ve reviewed bring about fast results varying from just a couple of hours after application to a week or so. You can simply spray the product, avoiding other plants, and see the moss wither over time.
For the products that will require you to measure your own ratios of the solution with water prior to application, be sure to follow the exact instructions advised for best results.
Some moss killers for the use across garden lawns will promote healthy growth of grass. If you’re searching for one of these 2-in-1 products be sure to check the properties on the container.
While moss removers can be used across a range of hard surfaces, some are suitable for lawns and others not. Be sure to thoroughly check where the product can be used prior to treatment on moss.
If you’re struggling to see results of the effects of a moss killing product, you may need to reapply it. Some products claim to kill off the plant for up to a year, while others may not be as effective.
This could be a result of the solution being too weak, having not followed the correct mixing ratios. However, it could also indicate that the moss-covered area needs to be treated more than once if it’s particularly aggressive. Apply the product and if results aren’t seen within a few weeks to a month, consider treating the affected area again as per the instructions provided.