Ohhh... the MCPA... that IS 2,4-D I'd never heard of it as that before.
I have some persistent clover and other weeds that the 1 gallon hand-sprayer Ortho products never get rid of completely.
Wait, that doesn't sound right. I looked up the label and it said something like 13% 2,4-D and 1.5% each triclopyr and dicamba. Maybe MCPA is the same thing as dicamba? Or we are not looking at the same label.
Brush-B-Gon concentrate (8% triclopyr) is the Ortho product that should kill resistant broadleafs, like violets and clover. I used a different brand of the same stuff to get rid of the creeping charlie in my front lawn a couple of years ago and it hasn't come back (I sprayed way into the neighbors lawn with it) It was slow-acting tho'. I sprayed it in the fall and it didn't seem to do much but charlie didn't come back in the spring.
I need to spray the CC in the back yard again; I didn't spray that so thoroughly and I missed a few spots. That, plus the stuff moving in from the back neighbor is all it take... :(