Well what a difference in a day. Very impressed. Sprayed in the morning and after dinner the grass was already greener. It's been 5 days now & my back yard looks it's best. It's about 1000 sqft. so I played it safe & sprayed 12oz to start off. My grass was already green, but wanted it darker. If I don't spray again I'll use some Milorganite to make it a little greener to experiment with.