I need to find a silver bullet. I played games with with a lot of weeds last year in my spot spray. If I am going to spend the time to walk over to a weed and spray it, I want it dead! Anyone care to divulge a great and cost effective formula for general spraying?
Different weeds sometimes need different solutions. If you want em dead, I would suggest following the idea of one of our frequent posters from Minnesota. Three-way plus triclopyr (Turflon), with a good surfactant. Use all at the maximum label rate, of course. That is perfectly legal. (Quicksilver, carfentrazone optional).
Calibrate carefully--do not assume that one gallon covers 1000 sqft. That never happens. Spray water on cement to establish your footage per gallon and use a marker to mark it on your sprayer or hand can.
Remember Quicksilver is effective mainly on young, annual weeds (see label).
And remember, dormant weeds do not respond well; mature weeds do not respond well.
If you are going to spend the time to hand spray--the cost of labor is far higher than the cost of the herbicide, (which is high). Let the chemicals do the work.
I was very close to going in this direction this year (quicksilver/3-way) but ended up going with Escalade 2. Let us know how you make out. Looked intruiging, but my concern was having applicators mix such a finite amount of quicksilver per batch. Went with the "keep it simple" plan.
Going to spray three-way ester to start and spike with a little QS if needed. I have a new yard that is full of the thickest moss I have ever seen grow in full sun. That one will get a dose of QS for sure. Maybe looking a Surge for the warmer days. Seems like a fairly decent price at 130.00/2.5.
Quicksilver works fast but mainly on small annual weeds. Does nice on smartweed, mallow, and purslane. If you are going to add something to a three way I would add (triclopyr), Turflon. Or try T-zone which already has Quicksilver, and triclopyr...plus dicamba and 2,4-d.