Unless you're prepared to go out there and wash down the dog urine, the
grass isn't going to last very long.

It's not my intention to start an argument, but to express puzzlement.
I've lived in this house since 1961. In that time, I've had four dogs,
one at a time --three females and now a male. IOW, there has almost
always been a dog urinating on my lawn. All were neutered as pups.

I have never found any damage from dog urine in my lawn, over all
those years. Obviously, many gallons of urine have been deposted on
my lawn in the 40+ years I've been here, but there has been zero
damage.

I'm in central PA, zone 6 but not far from zone 5.

vince norris