I use either top feeder jars or I use inner division board feeders, depending on how much how fast I want them to have the syrup. I use sugar and water syrup only, no fructose. I feed thru the fall, only if the hives seem to need it, and do not feed in winter at all. I try to get them all up to weight in the fall b4 winter so usually don't feed any later than thanksgiving day, if that late.
I've been keeping a few hives for the past 20-25 years, and no longer treatment free as I got tired of the losses.