Depends on your flow in the area. We're just starting our flow here so it's too late for me to consider using Apivar or other non honey safe treatments as I don't have 6 weeks to burn with my supers going on here shortly.
If you can't use a honey safe treatment and need to treat you may need to add another brood box to give them space, as long as all the brood is down below I don't see why you couldn't stick to 2 strips. Do a test after 6 weeks for your mite count. Perk of that, is if you run single deeps you could then split the colony.
However, if you're coming into a bloom you'd be missing out on a honey crop. You can either make honey, or make more bees...or use another treatment with the reminder to treat before your flow and not at the start of it.
If you can't use a honey safe treatment and need to treat you may need to add another brood box to give them space, as long as all the brood is down below I don't see why you couldn't stick to 2 strips. Do a test after 6 weeks for your mite count. Perk of that, is if you run single deeps you could then split the colony.
However, if you're coming into a bloom you'd be missing out on a honey crop. You can either make honey, or make more bees...or use another treatment with the reminder to treat before your flow and not at the start of it.