I am getting a package of bees and installing them. Should i powder sugar dust them and if so when should i start and how often.
Chances are Your packaged bees will already be pretty heavily treated for mites etc. I would recommend waiting a few months while your hive becomes established and then doing a mite count using a sticky board and do a sugar shake, if warranted after that. When doing a sugar shake (aka Dowd method) do 3-4 at 10-14 day intervals, weather permitting.