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Garden fences provide the perfect surface for algae to thrive. When it rains, or even just after you've watered plants near the fence, the porous wood creates a damp spot for algae to settle. The algae will continue to grow in shaded areas where the sun can't reach, stopping them from getting a chance to dry out. This is why the algae often appears on just one side of your garden fence.

These green algae stains can transform a oncepristine wooden fence into a slippery, unattractive nuisance that not only ruins its appearance but also can lead to structural damage. By trapping moisture against the wood, algae accelerates rot and weakens your fence over time, making maintenance essential.

While natural methods and household methods like white vinegar, washing up liquid or just pressure washers can do the job, they don't always prove effective in keeping the algae away for a long period.

If you're looking for a way to rid your fence of algae or any moss build-up and keep them away for longer, garden lovers have been obsessed with the Wet & Forget Mould, Lichen & Algae Remover that currently retails for £26.99, down from £35.99, on Amazon for a five-litre bottle.

One customer wrote: "The green algae on our wooden fence slats went almost instantly. It looks really good now. Was worried about the effect on nearby grass, but this seems less damaging than other chemicals we have used in the past.

"The slats now look much better. Really effective and long-lasting. This should prevent us from having to paint the fence this year."

Another user said, "So easy to use, and with such minimal effort, the algae on my fence has gone! Over the years, I have used so many different products, all promising the same thing and none delivering, so I was sceptical about this, even though the reviews were generally good.

"It was good on my patio, but it was amazing on my fence! Used a spray pump canister, and just one layer of spray on the fence panels has removed all the algae. Amazed! Highly recommend!"

A third commented: "This is amazing stuff! After all the rain we've had. The patio and paths had turned green. Used this and could see it working within a few hours. Two days later and everything is clear! Like a new patio and path had been laid. So, I tried it on the wood fence, gate and raised bed wood... another amazing result! The only things that should be green in a garden are plants and grass, and now that's what we have!"

A fourth exclaimed, "This product is the best on the market and worth the cost. My fences have looked great for years with a treatment every seven years or so. Plus, unlike high-pressure cleaning, it doesn't remove the pine wood treatment, meaning it is clean but not exposed to termite damage."

A few concerns listed about this product are that it didn't do the best job at removing lichen stains from patios.

The description of this product reads: "Designed for hassle-free application, Wet & Forget works over time to clean and protect your surfaces - no scrubbing, rinsing, or jet-washing required.

"Ideal for almost all external surfaces, making it perfect as a fence cleaner, patio cleaner, block paving cleaner, Indian sandstone cleaner, solar panel cleaner and driveway cleaner."

Alternatively, you can pick up smaller two-litre bottles of Wet & Forget Mould, Lichen & Algae Remover from B&Q for £18 and at Wickes for the same price.

There are also other algae removers on the market that work well on garden fences, like the Pro-Kleen Patio Cleaner, which retails for £14.90 on Amazon for a five-litre bottle, or the Scrubb Algae Remover, which costs £19.99 at ToolStation for a five-litre bottle.