1. Condense the hive to the smallest possible area possible. If a comb isn't covered with bees, take it out, get them to the smallest area possible, maybe 1 box. The bees need to be able to defend their territory.
2. Any combs that you take out, freeze for at least overnight in the deep freeze to kill the larvae and eggs.
3. Protect that and any other comb you may have, either by moth ice crystals (pdb only) or buy something like BT aizawai spores (Certan, some organic pesticides meant to kill bugs such as cabbage loopers or army worms)
4. You could try to create a moth trap, but I don't know nuthin' about that.
5. Make sure that you aren't actually dealing with small hive beetle, the larvae look similar but the SHB will slime up and ruin a hive.