Turn off the breaker that feeds that light. If you don’t see any activity, get up on a ladder and listen. If you don’t hear insect noise knock on the ceiling near the light and listen again. If clear, look for a screw that is holding up the conical shaped cover, that should be a decorative piece that can be slid down the pole. You should then be able to see what you are dealing with.
You can use wasp spray up into the gangbox if you want. The suggestion to use painters tape to cover hole under the decorative cover is a good one. Just be sure that you allow the wasp spray to completely dry before turning on the breaker again.
I have approached this kind of situation similarly.
Turn off the breaker that feeds that light. If you don’t see any activity, get up on a ladder and listen. If you don’t hear insect noise knock on the ceiling near the light and listen again. If clear, look for a screw that is holding up the conical shaped cover, that should be a decorative piece that can be slid down the pole. You should then be able to see what you are dealing with.
You can use wasp spray up into the gangbox if you want. The suggestion to use painters tape to cover hole under the decorative cover is a good one. Just be sure that you allow the wasp spray to completely dry before turning on the breaker again.
I have approached this kind of situation similarly.
Good luck!