Usually, you won’t have wasps in the chimney stack. In our experience, it usually’s honeybees.

If you do have honey bees in your chimney stack, the main problem you’re going to have is access. You will need to provide scaffolding or a cherry picker to deal with the honey bees safely. If the honey bees have been there longer than 3 to 5 days, they will need the hive.

There is a video of Honey bees swarming around a chimney here.