I've been battling Wild Violets for years with no success. I purchased this product because of it's different chemical makeup as compared to off the shelf products like Ortho which have no effect at all on violets. After one application the violets looked sick and showed some browning after a week, while other colonies showed no damage. I upped the dose by 1/2 once per gallon and hit them again, this time with better results but some yellowing of surrounding grass. I am encouraged so far and time will tell.
I used it o my front lawn and the back yard; both have Bermuda grass and plenty of weeds. april showers in Texas provide a good environment for the weeds to grow. I am going to try again after the rainy season. Maybe it will be more effective