What can you do with bees that come from a removal like that, they couldn't possibly be usable correct?
Usually not. Don, aka the fatbeeman says hives where chemicals have been used you routinely have to requeen anywhere from 6 months- 1 and a 1/2 yrs tops, because of infertility problems, and the chemicals he is referring to are ones that were designed to treat honeybee colonies. Can't imagine what commercial grade pesticides would do to the fertility of a queen and what detriment to the colony as a whole.
When I have my doubts I only save the bees and 86 the combs, have to treat them like a swarm or package then.