If you are having a problem with the wasps and bees at the top of your chimney, it's time to call a few professionals for help. There are many dangers for the home and for the occupants when insects nest in the wood of the chimney.
The insects need to be removed, the house needs to be inspected, and all of the damages need to be repaired. Here are a few things you want to consider if you're dealing with this problem on your property.
Pest control experts can treat the insects that are swarming around the chimney to remove all the adult insects that are living in the wood, and to remove any eggs or nests. If the insects have burrowed into the wood around the chimney, they are probably in the attic of the house, the wood window casings or other areas of the home. The pest control experts will treat the entire property to make sure these pests aren't a problem again in the future, and to ensure there aren't other infestations around the property.
Masonry experts can remove the damaged or rotted wood that was at the top of the chimney and have it replaced with brick or metal, so pest infestations aren't a problem in the future, and so you don't have to worry about moisture problems in the chimney. If the wood was saturated with water and rotting, then water probably got into the chimney and could have done damage to the brick. The masonry experts can do all repairs needed.
The pests could have brought debris into the fireplace, nested in the chimney, and they most likely left feces or other waste inside the chimney. You'll want to have the chimney cleaned so you don't have to worry about what is lingering around in the chimney that you can't see, and also simply because chimneys need routine cleaning.
If you can see wasps, bees or other insects swarming around the top of your chimney and you worry about these insects getting into the home or harming someone on the property or in the house, it's time to get professional help to treat the problem. You don't want to to wait until it's too late to get rid of the insects, or until they have already stung someone or burrowed into the internal structural components of your home.