tig, I was hoping some others had some experience to pass on, perhaps on the upbeat side. But I guess having no response isn't much better.
So I'll give you my experience.....
About five years ago, I donated a bunch of hives to test some products prior to release for sale. Sucricide about that time just came out, and was included since not many were familiar with it. It was tested with apilife-var (out at that time) apiguard (not out yet), as well as another product yet not released.
By far, sucricide was the least effective of the products tested. That's not to say it did not work. Just that it was a bit lower in mite kill than the other products. If I remember correctly, it had around a 60% kill as compared to some of the others with 80 to 90% kill.
The downside was the fact that to be effective even at that rate, every bee, from every frame, needed to be coated. Very time consuming, and very labor intensive. (we had one pulling frames, and one spraying.) To do it haphazardly, meant just lowered the kill rate. Others have tried to do quicker methods (drench method) but I'm not sure what the outcome of the effectiveness was. And I question the potential damage since when used as directed, brood kill is possible if NOT for the bees shielding the cells from being sprayed.
If you have the time, to complete as directed, coating every bees on every frame, and doing three treatments, then a good kill rate can be achieved. But to cut corners, cheat in thinking you got most of the mites, etc., just means your mites will come back faster, since it has a lower overall kill rate to begin with.
I think for someone with a few hives, it can be a safe way of treating. But if you have hundreds of hives, forget it. Just like fogging or anything else, time and labor just makes other methods more effective and less costly.