Moss in Yard

Use lime, REAL lime. Not limestone. You can probably find "hydrated lime" at your local nursery, but anhydrous lime (CaO) is the real stuff. But be careful because it is terribly caustic. "Limestone" is really pulverized seashells, CaC03 and has almost no effect on the pH.

I agree. I would use one of the commercial moss killers, which are effective. Raising the PH will also kill moss, but the level to kill it quickly will leave the soil with a PH higher than desirable for grasss.

It's also not true that the garden type lime products have no effect on PH. They do, they just take a long time to work, which is why you can apply them anytime without burning the lawn, which is not true of contractor's lime.