inspection a few days ago and i found a swarm , about a pound or so on the ground, near the hives. did not see a queen, but she may have been there. i sprayed them with a little sugar water and tried to get them in a nuc. they immediately came back out and clustered on the ground. left a nuc there with some lemon grass oil, they would not go in. nuc had drawn comb. checked today, the swarm is a bout 20 feet away, and still on the ground. any idea whats going on? my bees get regular mite checks and treatments as necessary