Re: Formic Pro Issues?
You are to be congratulated for doing a before and after mite count. So many people do not do that, do a treatment that didn't work, but assume they treated so all is well, and end up with a dead hive. Your treatment failed, but at least you know it did, so can take other measures.
Without seeing the hive, can't say why it didn't work, but there are several things that will prevent a formic based treatment from working properly. For me, I have found that if a formic treatment did not kill at least a few larvae (which can be seen thrown outside the entrance by the bees), it probably was not strong enough to do a good job on the mites either.
Re the possible apiguard treatment, a note of caution. Both apiguard, and formic, are fumigants. For whatever reason be it hive configuuration or whatever, one fumigant has failed, so the same thing could happen to the other fumigant.
My personal view would be to treat with Apivar strips. Very fullproof and reliable. You just put them among the brood, remove 8 - 10 weeks later, and job done.
"Every viewpoint, is a view from a point." - Solomon Parker