thanks jstinson this helps a lot just worried about mites getting two high in spring time will the bees pull out some brood
Are you asking if the bees will pull out brood in response to the treatment or to a high mite load? If the treatment, then no...at least not with Apivar.
If you mean because of a high mite load, then
maybe. If your bees are hygienic they might show it by removing varroa infested larva. If they are not particularly hygienic, then they won't. I don't know where you got your bees from, but unless it's a local feral stock or a reputable treatment-free supplier, the odds are good that they won't pull out any brood at all.