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pathways around my house get a ton of growth on them. Last year I borrow a pressure washer and it helped, but looking for options.

I also have some growth on a retaining wall and a very slick wooden ramp.

So far I have seen this 30 seconds spray and walkway cleaner.

Anyone ever used that? Other suggestions?

Thanks.
 
Sprinkle baking soda over it, wait 24 hours, sweep away.

50/50 white vinegar/water will kill it as well, but will need to be washed off.
 
You have to be careful with this stuff.

The moss on our roof is load bearing. If I remove it, this bubblegumhole will fall down!
 
Moss-B-Ware is what we use, it's basically Sodium Chloride and other stuff that kills and helps prevent moss and other schmutz from taking hold, lasts around a year, but may require more applications depending on your specific area! It's also pet safe, but would advise not letting your floofers walk through any treated areas for a few weeks until the stuff washes off!! Apply and spray water, let it sit for at least 24 hours and then pressure wash off!

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Good old fashioned White Vinegar and Salt also work, but take longer and may not be as effective, especially with a lichen base layer under, which it quite typical for the PNW in shaded areas!
 
I typically buy the granulated version of Moss Out because I got tired of spending the money only to have a heavy rain wash it dow the gutters before doing anything.
 
Our house is located in a little forest, so keeping moss at bay is a never-ending chore. I apply Moss-B-Ware (powdery granules) annually on the paved driveway & sidewalks, and semi-annually on the roof.* For even coverage, I dispense it with a shaker that I made by drilling many holes into the round lid of a large plastic Moss-B-Ware container.

A couple of weeks after application, I use a push broom to redistribute the residual dust onto any areas that still look "mossy". That residue is still surprisingly effective, although small, stubborn patches sometimes get a fresh application (but only if OCD is kicking up worse than arthritis).

North-facing vertical surfaces like siding and retaining walls also need treatment, and a liquid product called Wet and Forget seems to be very effective & long-lasting. My only problem has been to spray it high enough to reach upper level siding. *

* I shouldn't have to say it, but I will anyway: protective gear is advisable (like mask, goggles, and long-sleeves), particularly if spraying onto overhead surfaces.
 
Last Edited:
The best product I have used for many years is pure Zinc Sulfate in the powdered form.
I buy it bulk at a warehouse called Concentrated Inc. in Clackamas, OR. near Bob's Redmill Restaurant off of Hwy 212.
It's listed as a livestock feed supplement in both powder and granules.
The powder works best, as it can be easily dissolved in water and sprayed on, or broadcast on the ridge of a roof that needs moss treatment.
The granules will just roll off the roof before it has a chance to kill the moss roots that are clinging to the surface of the roof shingles.
By spreading a zigzag trail of the product only at the top of the ridge, the zinc will dissolve when it gets wet from either rain or a hose sprayer and will distribute downhill by itself.
A 50 lb bag is around $52.00, but when it's compared to buying Moss B Ware, it's only a $1.00 a lb. compared to $12.00 a lb. for a can of Moss B Ware, which isn't in a pure form. If applied correctly, moss won't return for years. The only issues I've found is that a customer of mine had some delicate Fuchsia plants hanging directly under the eaves of the roof and the gutter had some leaks, which killed her plants after getting them wet.
I also noticed that the product will lightly stain white paint if sprayed to close to a house or building, so I would bring along some type of protective barrier like cardboard when doing commercial walkways. I have a couple of elderly neighbors that buy a bag together and after I treat their roofs, I get to do my two houses and shop roofs. One bag generally last three to five years, we don't have very big roofs.
Wear a mask when using, as it's an irritant.

There's a dealer finder map on their website showing other stores that sell the same products all across America.

 
The best product I have used for many years is pure Zinc Sulfate in the powdered form.
I buy it bulk at a warehouse called Concentrated Inc. in Clackamas, OR. near Bob's Redmill Restaurant off of Hwy 212.
It's listed as a livestock feed supplement in both powder and granules.
The powder works best, as it can be easily dissolved in water and sprayed on, or broadcast on the ridge of a roof that needs moss treatment.
The granules will just roll off the roof before it has a chance to kill the moss roots that are clinging to the surface of the roof shingles.
By spreading a zigzag trail of the product only at the top of the ridge, the zinc will dissolve when it gets wet from either rain or a hose sprayer and will distribute downhill by itself.
A 50 lb bag is around $52.00, but when it's compared to buying Moss B Ware, it's only a $1.00 a lb. compared to $12.00 a lb. for a can of Moss B Ware, which isn't in a pure form. If applied correctly, moss won't return for years. The only issues I've found is that a customer of mine had some delicate Fuchsia plants hanging directly under the eaves of the roof and the gutter had some leaks, which killed her plants after getting them wet.
I also noticed that the product will lightly stain white paint if sprayed to close to a house or building, so I would bring along some type of protective barrier like cardboard when doing commercial walkways. I have a couple of elderly neighbors that buy a bag together and after I treat their roofs, I get to do my two houses and shop roofs. One bag generally last three to five years, we don't have very big roofs.
Wear a mask when using, as it's an irritant.

There's a dealer finder map on their website showing other stores that sell the same products all across America.

Im looking at walk ways. Is it safe for pets? This looks like it might be a good option if works for walk ways.


Also looks like price went way up. Several that looks the same, not sure of the differences. I am guessing I can find at feed store a little closer to me.
 

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