Zinc Sulfate Monohydrate - 35.5% Zn - 1 Pound

Mixes with water well and sprays well from a hose adaptor. It killed the roof moss after one week . Much cheaper than buying a 1 quart bottle for $20 that can cover only 10 x10 meters. This bag will allow for high volume moss killing . I had used the other so-called moss killers using Fatty Acid. A waste of money and time as the moss did not die.

This zinc sulfate monohydrate product exceeded my expectations! With a purity of 35.5% zinc, it's exactly what I needed for my agricultural applications. The packaging was sturdy, and the product arrived promptly. The purity of 35.5% Zn ensured potent efficacy in my applications. The quantity provided great value for money. Highly recommended for anyone looking for a reliable source of zinc!

For roof moss, this is the stuff. Killed all my roof moss. Mix with warm water and use a garden sprayer with a straight stream to improve reach. I did my whole roof from a ladder, didn't even have to step onto the roof. Be careful not to get it on your grass or other plants, that would be no bueno.

Once dissolved, this produced a lot of reddish sediment. That was probably iron. I had to filter it several times to get a clear solution.

Much smaller amount then I anticipated. However.. it does seems to eliminate the moss problem, but doesn't cover much of an area. I just may not have paid enough attention to the description, and expected a little more product