10 Best Moss And Algae Killers

Wet & Forget Mould, Lichen & Algae Remover is a convenient solution for outdoor cleaning, particularly effective in removing mould, mildew, and algae. Its primary active ingredient is Benzalkonium Chloride, which helps in breaking down these unwanted growths. The application method is simple – just mix one part of the solution with five parts water, apply it to the dry surface, and let it work without any need for scrubbing. This is beneficial for those looking for a hassle-free cleaning method.

One of its strengths is the large coverage area; a 5-litre bottle can be diluted to make up to 30 litres of cleaning solution, covering between 100 to 300 square meters, which is quite efficient for larger surfaces. The product is versatile and can be used on various outdoor surfaces like roofs, bricks, natural stones, and even artificial grass. However, users should ensure that there are at least 5 hours before any expected rainfall to allow the product to be rainfast and effective.

Safety is another consideration. While it does not contain bleach and is biodegradable, it is advisable to use protective gloves and eye protection during application for personal safety. The product has received positive customer reviews, indicating satisfaction with its performance. However, it is important to note that the product is not specifically marked as safe for plants and pets, so caution should be exercised around these. Wet & Forget offers an easy and effective solution for outdoor cleaning with a significant coverage area and versatile application, though users should handle it with care for safety.

The Jarder Spray & Leave 4 x 5 Litre Concentrate Cleaner is a convenient solution for tackling green mold and algae on various hard surfaces such as patios, decks, and fences. It offers the advantage of no-effort cleaning—simply mix with water, spray, and then walk away. This makes it quite user-friendly for those looking to avoid scrubbing or pressure washing. One of the standout features is its super concentrate formula, which means one bottle can yield up to 30 liters of cleaning solution, effectively covering a large area of 240 square meters. This makes it ideal for larger outdoor cleaning projects.

An added benefit is its long-lasting effect, with results visible in just 2-3 days and a barrier that helps prevent algae regrowth for up to six months. In terms of safety, the product is biodegradable, pH8, non-caustic, acid-free, and bleach-free. Once dried, it is safe for children and pets, which is reassuring for households with families and pets.

Potential buyers should be aware that the product's effectiveness and rainfastness aren't explicitly detailed, so it might be wise to avoid using it just before rainfall. Those with smaller areas to treat might find it more suitable to look for products with smaller volumes to avoid wastage. It's a good choice for someone looking for an easy-to-use, effective outdoor cleaner that provides long-lasting results.

The Algon 20L Organic Path and Patio Cleaner Concentrate is a good choice for those needing to tackle moss and algae on paths, patios, and other hard surfaces around gardens, kennels, farms, or sports areas. Its main advantage is being an organic and environmentally friendly formula that is safe for children, pets, and wildlife, which makes it appealing if safety is a priority. You apply it as a liquid concentrate, typically using a knapsack sprayer, which covers about 480 square meters per 20L drum.

One notable feature is that you don’t need to rinse it off after application; you just apply and leave it, with visible results starting in a few days and lasting up to a year. This long-lasting effect means fewer applications over time. The 20L volume and its weight (around 44 pounds) might be a bit bulky for some users to handle without proper equipment.

With a strong customer rating of 4.5 out of 5 stars, many users seem satisfied with its effectiveness and safety. For those seeking an easy-to-use, child- and pet-safe moss and algae cleaner for outdoor hard surfaces that provides lasting results, Algon’s concentrate is a solid option, especially when applied with the right sprayer.