Scotts MossEx 3-in-1 Ready Spray, Kills Moss, Algae and Lichens, Fast Acting, Use on Lawns, Roofs, and Patios, 32 fl. oz.

Used this stuff on a 16' x 12' screen porch roof to make my insurance company happy. (Even though the porch will be coming down and be rebuilt.) Yeah, it was pretty mossy. This moss killer works. I used it pretty liberally coverage-wise. Everything went brown and sort of dried up. I then used a hose spray and a broom to get the dead stuff off. Insurance company was then happy.

Product worked but I did have to buy another bottle to use. My moss growth was in abundance. Killed visible moss on first application but small patches started to sprout 2 days later. Recommend after treating moss using a tool to pull up dead moss between pavers.

We have a VersaCourt Tennis court and after spring and now heavy rainfall lots of moss. You need a garden hose to spread the spray, but it's easy to attach and the switch built into the container works perfectly. It take up to 3 days for the moss to turn brown. Once brown, the moss is clearly dead. It might need less than three days if it didn't rain every day. It ain't cheap, and perhaps ferrous sulfate a cheaper product might work as well but we were reluctant to try it on the plastic tile surface as the instructions on the product say it's for lawns not hard surfaces.

Absolutely worthless! Followed instructions exactly and this spray did nothing!

The only thing I really liked was that it doesn't stain wood or concrete. The shape of the container made it difficult to point and direct in 'one of those' places....if just waving it back and forth in a big yard it was o.k. It was one or off...hard to control application rate. It doesn't go very far and having to buy another bottle just to follow up the previous treatment gets too pricey (not a good value).

This did the job, killing a patch of moss. Scott says it won't hurt your plants, so I trust them. So far, so good. It does dispense quickly... maybe 2-3 minutes total, so I probably put it on thicker than I needed to. 1 month later, I need to order more.

This is the real deal for moss killer! I have literally tried bags upon bags of lime which are heavy and never did work. Had a lawn person out and the quoted price was outrageous to treat and kill it so I had just excepted my front yard would just be a bed of ugly moss till I tried this stuff. I attached to my hose and sprayed. So easy and by day 4 the video shows the difference. I just ordered second bottle to finish rest of yard and I’m sure I will have to respect all again due to the amount of moss. We have 11 oak trees in front yard and due to the high acidity the produce it makes it very hard to grow nice green grass until now and I’m so excited and relieved I finally found something that is legit!

I bought the first bottle of in April 2024 and tried it on a bachyard walkway that was shaded and stayed damp after trying A copper based produce that didn’t work well and stained the walkway (I was warned by the mfg. instructions that it would stain but I didn’t realize how permanently). Read about this one and decided to try it also being warned in the mfg instructions that repeated applications might be necessary. I ordered two more bottles in May 24, used them both one week apart and still haven’t solved my moss problem. What did surprise me was the way the application nozzle in the bottle shot out a very irregular spray pattern making it difficult gor me to control where the spray went. The entire bottle empties a whole lot faster than I liked (really fast, in my opinion) limiting the area that I could spray before emptying. The abutting landscape that I didn’t manage to keep the spray off if did not react well either. Not going to try the fourth bottle.