Q.Saving grass where dogs pee a lot on it
Greetings! In our HOA community, we have a problem in a couple of spots where grass grows, but it is a favorite spot for dogs to pee on. Hence, the area often gets yellow areas or the grass just about dies off because of the frequency one spot gets targeted (dogs will pee on spots where other dogs go as a way to overmark another). These areas get water from a sprinkler system, but it is not enough to dilute the urine, but at least there is some effort indirectly that way. So, we would like dog owners to use a liquid sprayer to add some kind of liquid fertilizer that will counteract the urine. Since urea has an atomic base of nitrogen (NH3, NH4) like ammonia, I am guessing that a liquid buffer to counteract or breakdown the urea would be best, but I think a liquid fertilizer might still be best becasue it will at least green the grass and feed it, which wil counter the yellowing effect from the urine. What do you suggest, please? Jim Fulbrook, Fairfax, VA jfulbrook@verizon.net

Jim; You are more of a scientist than I and you can pursue the aspect of chemically neutralizing the urine, but I have never heard of that approach.
Other methods are simply diluting with water, and dog repellents. Or how about a designated "dog park" section in a corner of the common grounds somewhere?
Here is an article I found for you with an overview of available repellent options:
https://www.thespruce.com/use-dog-repellents-2132575