Love the 2-4-D Amine. This stuff rocks.
I use about 8 oz. in 3 gallons of water in a sprayer with the 65% stuff.
If you have dandelions, use this twice a year, and you will greatly diminish them.
It kills all broadleaf's and leaves fescue's alone.
But I warn you, too hot (more than 8oz per 3gal), and you WILL burn your grass.