[HairOfTheDog]

I have a question, that I think is a chemistry question.

In the lawn, dog pee kills a spot in the grass... but in the pasture, horse pee makes a green spot. Is that an alkaline/acid thing? and which is which?

[RosieCotton]

I don't have an answer...but I think my lawn could use some horse pee...especially in spots where the dog peed.

[Overtaxed]

Hmmmm....according to eHow it's nitrogen burn that turns the grass yellow.