I have used it in the past when I had the ability to be in the hives always on time, but now my schedule is just too unpredictable. While you can trap a lot of varroa by getting the drone combs out before the bees emerge, you can also BREED varroa like heck if you don't get the drone comb out in time. My view is that the drone comb method is excellent for the beekeeper who has a predictable schedule. I am gearing up to shift my hives over to small cell.
justgojumpit