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At this time of year, it’s not uncommon to see lumps of fuzzy green moss pop up on damp and cold areas of your garden.
While it may look harmless, if rather ugly, moss can actually be quite destructive. Once established, moss holds moisture which causes the area below it to deteriorate, including driveways and patios. It can also turn pathways and wooden decking into a slippery hazard.
So in order to avoid a trip to A&E, you need a sure-fire way to remove moss from your hard surfaces, as well as a solution to a mossy lawn.
Here are the 10 best moss killers to buy right now as tried and tested by Mumsnetters.
1. Best overall moss killer: Wet & Forget Moss Mould Lichen and Algae Remover
Price: From £29.38 | Buy now from Amazon
“We got someone to spray some long-term moss remover. It takes a few months to work but, three months on, it's definitely looking better than next door’s. It's called Wet & Forget.” GuyFawkesDay
“We have the same issue with our roof (on both sides!). We use Wet & Forget, which you spray on and leave.” Tappering
Wet & Forget Moss, Mould, Lichen and Algae Remover does exactly what it says on the tin.
Just use a good sprayer to apply the product to your patio, path, tarmac, block paving or roof and let it work its magic, with no scrubbing or rinsing required. Mumsnet users rate Wet & Forget particularly highly for tackling moss growing on the roof.
It’s worth noting that one five-litre bottle makes 30 litres of product, covering an area of up to 300 square metres, which is bigger than a tennis court!
- Requires minimal effort
- Works on a range of hard surfaces
- Very toxic to aquatic life
- Causes serious eye and skin irritation - use with care
2. Best moss killer for patios: Patio Magic!
Price: £18 | Buy now from Amazon
“I use it at work for the slate-covered areas. You may have to do it a few times using a rake to turn the gravel over and spray the underside.” AlCalavicci
Another great moss killer which is pretty self-explanatory is Patio Magic!.
As well as being the best moss killer for patios, Patio Magic! also casts a spell to banish moss from tarmac, painted or glazed pots, garden ornaments, brickwork, greenhouses, conservatories, caravans and other hard surfaces.
Expect to see results within two to four days and protection for six to nine months.
But make sure you keep the kids and pets away from the patio until the moss killer has dried.
- Also works on other hard surfaces
- No need for scrubbing
- Takes time to work
3. Best moss killer for lawns: Miracle-Gro EverGreen Autumn Lawn Care
Price: £11.29 | Buy now from Amazon
Miracle-Gro EverGreen Autumn Lawn Care is the ideal way to kill moss while toughening up your lawn ahead of the winter months.
The treatment is packed full of nutrients to help create stronger, tougher roots while iron keeps moss growth in check.
Just spread the granules, water in, and expect to see results in seven days. Just don’t forget to rake the moss out once it’s died.
- Improves lawn condition
- Results last for several weeks
- You may struggle to get even coverage
- Pets and children must be kept off lawn while treatment is ongoing
4. Best moss killer for artificial grass: Paw Origins Artificial Grass Cleaner
Price: £6.79 | Buy now from Amazon
“At least twice a year it needs moss killer down and a good brush out to remove some of the dead moss.” WeAllHaveWings
Love them or hate them, artificial lawns deserve some TLC too.
The Paw Origins Artificial Grass Cleaner kills moss, algae, bacteria and viruses from fake grass and claims to be safe enough to use on dog beds and bowls.
It’s also great for eliminating unpleasant odours, swapping the smell of dog wee for the much more pleasant aroma of freshly cut grass.
One litre of concentrated product can be diluted to make 10 litres, but it can be used neat too.
- Good value for money
- Safe for pets
- Leaves behind freshly cut grass smell
- Can cause eye and skin irritation, so apply with care
5. Best lawn feed weed and moss killer: Aftercut All In One Lawn Feed, Weed and Moss Killer
Price: £13.99 | Buy now from Amazon
“The presence of moss is an indicator that all is not right with the soil (as far as the lawn is concerned) [...] you need to champion the lawn. If the grass grows, the moss will go.” BrownCurlsAmberEyes
If your lawn is in need of a general MOT, then the Aftercut All In One Lawn Feed, Weed and Moss Killer is the product for you.
As well as strengthening the grass, this product kills moss and no less than 12 different types of weeds.
Just sprinkle it over the lawn, make sure the area is watered within 48 hours and watch it get to work. After seven to 14 days, the moss will turn black and will need to be raked up and removed. You can even mow the lawn as little as four days after treatment if you wanted.
For the best results, use between May and August when the moss, grass and weeds are actively growing.
- Good value for money
- Will need to repeat treatment for best results
6. Best moss killer for roofs: SmartSeal Moss Remover
Price: From £29.95 (for five litres) | Buy now from Amazon
If your roof is covered in a furry green blanket, the SmartSeal Moss Remover will have your roof tiles sparkling in no time.
This professional-grade moss remover also makes light work of algae and fungi growing on decking, concrete, block paving, tarmac and other outdoor surfaces. Just apply and wait a few days for the moss to start dying off, with no need for scrubbing or washing.
Once the moss has gone, you can put more remover down to prevent moss from ever darkening your doorstep (and rooftop) again.
- Easy application
- Can be tricky to get the right concentration
- Doesn’t produce instant results
7. Best organic moss killer: Viano MO Bacter Organic Lawn Fertiliser & Moss Killer
Price: £24.98 | Buy now from Amazon
This lawn feed and moss killer is 100 percent organic and, unlike some other moss killers on the market, it doesn’t leave a horrible black mess behind.
It also improves the condition of your soil, which will make it harder for moss to grow back.
For best results, the manufacturers recommend using the product between March and May, so there’s no excuse not to be prepared.
- Safe to use on stonework
- Harmless to plants and animals
- Not meant for year-round use
8. Best moss killer for hard surfaces: Pro-Kleen MY16 Simply Spray and Walk Away Green Mould and Algae Moss Killer
Price: £14.95 | Buy now from Amazon
In a similar vein to Wet & Forget, the Pro-Kleen MY16 Patio Cleaner is a spray and leave kind of job.
This intense cleaner does the business of ridding patios, decking and outdoor furniture of moss, along with algae and green mould to boot.
Five litres of solution makes up to 25 litres, or you can use it neat if you have a particularly bad case of the green stuff. Expect results in a few days that can last for months.
- Easy to use
- Long-lasting results
- Toxic to aquatic life
- Causes severe skin burns and eye damage - use with care
9. Best pet-friendly moss killer: Westland SafeLawn Child and Pet Friendly Natural Lawn Feed
Price: £7.99 | Buy now from Amazon
If you find it is nigh on impossible to keep the kids and dog out of the garden, then the Westland SafeLawn Child and Pet Friendly Natural Lawn Feed offers a natural, safe method of moss control.
The product works by helping to create a lusher, fuller lawn, so as the grass grows it will act to ‘outcompete’ moss and prevent any more from appearing. So this particular moss remover is for those who believe that prevention is better than cure.
- Child and pet-friendly
- Natural ingredients
- Preventative method - consider an alternative if you have a major moss problem
10. Best moss killer for driveways: Green Terminator Remover
Price: £32.17 | Buy now from Amazon
The menacingly-named Green Terminator Remover is the saviour of moss-laden driveways. Apply neat or diluted to the surface and you can expect to see results anywhere between 24 hours and four days after application.
The green infestation will die away, without causing any damage to the underlying surface, and can then be easily brushed away.
Hasta la vista, moss!
- Can be used on any hard surface
- Doesn’t damage underlying surfaces
- Can be tricky to know how much to dilute
What is the best time to kill moss?
Damp autumnal conditions are perfect for cultivating moss on outdoor surfaces. Moss on lawns can be a temporary problem caused by damp or more persistent, suggesting a problem with the underlying condition of your soil.
The best time to treat moss on your lawn is in the autumn or spring when the moss is actually growing. Improving the health of your lawn will help to keep moss at bay, so once you’ve cleared it, it’s worth investing in some quality lawn feed.
What kills moss permanently?
If you want to ensure that the moss on your lawn is gone for good, you should seek out a chemical treatment containing ferrous sulphate, otherwise known as sulphate of iron.
How do I get rid of moss?
Always read the instructions carefully before applying moss killer and make sure you wear protective clothing, such as gloves or goggles, if required.
Some moss killers can be used neat while others need to be diluted. Once you’ve established the strength you need, apply it to the affected hard surface. You will need to keep children and pets away from the treatment area as instructed. Some moss killers are very harmful to aquatic life, so bear that in mind if you have a pond near the area you need to treat. You should expect the moss to be dying off within a few days.
In the case of applying moss killer to lawns, scatter the granules evenly and water as directed. After a couple of weeks, rake the dead moss out. Leaving it behind may cause the problem to spread to other areas of your lawn.
How do you make homemade moss killer?
There are various recipes online which claim to kill moss. These usually include washing up liquid, bicarbonate of soda or vinegar. Some Mumsnetters swear by these natural remedies, which are often kinder to the environment and wildlife than chemical alternatives. However the effectiveness of these natural alternatives varies, so if you want something that’s guaranteed to kill moss fast, then you may wish to consider one of the products on this list instead.
What is the best moss killer?
Mumsnetters can't get enough of Wet & Forget Moss Mould Lichen & Algae Remover which is why it is our pick for best overall moss killer.
How we chose our recommendations
We scoured Mumsnet forums to find out which moss killer our users rate highly - and which ones they weren’t impressed by.
We also consulted consumer watchdogs and took note of what they looked for in moss killer and which brands they were recommending to their readers.
Finally, we collated all that information and then looked at other online reviews to see which moss killers had received the best recommendations.
Why you should trust us
We work hard to provide unbiased, independent advice you can trust. We do sometimes earn revenue through affiliate (click-to-buy) links in our articles. This helps us fund more helpful articles like this one.