I was going through the shed a couple of weeks ago and found three bottles of weed and feed "concentrate" (which covers a whole 100sqm haha). i bought it in 2019 or so very cheaply (think it retailed at $9ish and i payed $3 as the labels were buggered as another bottle near them was leaking).
It was standard weed and feed so mcpa and dicamba base - not something you would risk applying to buffalo as dicamba will kill it.
Thought I would use it on the verge as its been neglected for 15 years but i will retic it next month now the bore is in. 70% broadleaf weed coverage - all of which are species i have dealt with in the upper lawn with buffalo pro in previous years.
Applied weed and feed 3 weeks ago and it honestly did SFA - it showed signs of working only on some of the largest ones but more critically the smaller ones didn't get enough herbicide on them, only benefiting from the urea and potassium nitrate which makes up the feed component of the mix that ended up in the soil.
How did it go on your lawn MF?