I thought I had our current home fairly well-sealed, but I found out the hard way Last year that our assumptions were gravely mistaken. Although I had done a moderately good task with the weather stripping on all of our windows & doors, I forgot to inspect our air intake vents on the outside of our house. These vents pull in fresh air from outdoors to circulate with the Heating, Ventilation, & A/C cycled air indoors. In many cases this can lead to better air quality inside your current home overall. Unfortunately, these areas are also prime environments for bees & wasps looking for shelter from the elements. One day I was in our bathroom when our heat kicked on. Within hours multiple wasps started flying out of our air vent in the ceiling. I was both baffled & freaked out by the event. I had no system how extensive the nest was, or if there was even a nest at all, so I called a local Heating, Ventilation, & A/C company. Unfortunately, there was destruction to the filter on the fresh air intake, so bees & debris & dirt were getting pull into our central system. My Heating, Ventilation, & A/C worker upgraded the filter & repaired the destruction to the intake inlet to make sure nothing as big as a bee or wasp could make their way into our current home care about this again. Once the tech situated the wasp nest, he used an eco-friendly insect repellent to get the wasps out so he could manually remove the nest. It’s essential to steer clear of any harmful pesticides or insecticides when you’re dealing with pests in your air system. Those chemicals will accumulate up there & you’ll never be able to fully scrub your air system, constantly breathing small amounts of toxic fumes every single day. Now that our air intake inlet is repaired, I don’t have to fear bees flying out of our vents at random moments of the day.