I sprayed the Q4 plus yesterday so I can't wait to see how this turns out. Q4 plus was just released for sale this past year. The bad news that I found out from my dad, who is a licensed spray dealer, is that he charges 120 dollars a gallon cash. Holy carp, this stuff is expensive so with that cost it better work wonders. More bad news from me is it took 2 gallon for my yard...Ouch!