Wet & Forget’ and ’30 Seconds’ are probably the two most prominent names in the industry. Even the manufacturers claim that they are selling some special formula that can kill Algae and Moss. Again, this is a much smaller product than others on our list, making it better suited for smaller tasks.

This formula should be used with a basic garden pump sprayer. It is not designed to be used with a garden hose type sprayer as it will be too diluted. Economical to Use

Does Wet and Forget kill mold?

But pressure washers can also blast your shingles off, so be careful when you’re spraying your roof. Basic safety items like safety glasses, a respirator, gloves, and long sleeves are certainly important. You can also equip yourself with a long-handled brush or roller, or a garden sprayer, to make applying your roof cleaner a little more straightforward. Why Trust Bob Vila

Not all roof cleaners can cover the same amount of square footage, so it’s important to understand how much roof a bottle or jug can handle. To do this, you have to know the size of your roof first: Simply multiply each section of your roof’s width by its height. Tally each of those sections. The number you get after you add up all the different planes is your square footage. This means that you can create upwards of 10 gallons per bottle, which can cover up to 2,000 square feet of exterior surfaces. The first of these variations is the 32 Oz bottle. Much like one of the previous bottles we discussed, this bottle can be attached directly to your nearest garden hose, to allow you to easily dilute and spray your solution in mere seconds! The best roof cleaners break down into two options: eco-friendly and chemical. Eco-friendly options don’t contain harmful chemicals, so they’re safe to use on roofs above gardens and plants. The composition of chemical-based products, on the other hand, isn’t always so environmentally conscious. As well as this, Spray and Forget also offer the same product in a convenient spray bottle. This spray bottle features an ingenious design that hooks up[ directly to your garden hose so that you can get right to spraying your yard.In areas where you cannot move the object being cleaned, protect surrounding plants and other materials from over spray with a drop cloth or sheeting. Do not use near children or pets. Gloves and masks are not necessary, however some people may feel more comfortable using them especially if they are prone to breathing issues. This product contains no bleach or acids, so that makes it safe to use, and also means that you won’t be damaging your yard, or harming outdoor plants, or risking the health of local wildlife. Over the course of his decades-long career, Bob Vila has helped millions of people build, renovate, repair, and live better each day—a tradition that continues today in the expert yet accessible home advice at the heart of BobVila.com. Today, the Bob Vila editorial team distills need-to-know information into project tutorials, maintenance guides, tool 101s, and more. These home and garden experts then thoroughly research, vet, and recommend products that support homeowners, renters, DIYers, and professionals in their to-do lists. True to its name, this spray bottle makes it easy to spray the solution onto your desired area, and then simply leave it to do its magic.