For those of you that live in areas that dip below freezing in the winter, we are entering that time of year when it becomes easier to clean the wasp’s nests out of your exhaust vent caps.
Nobody likes to be stung (I don’t think this is a “stretch,” but I suppose there is someone somewhere that is beyond strange).
When the wasps are dormant in the winter, it is a good time to get rid of these nests---possibly without calling a pest control operator. Cleaning when they are dormant can also allow for removal without using poisons that are bad for the environment. These caps can be on the side walls of the home, or on the roof, but they all need to be maintained clean so that the flap can open and actually function when the fan is running.
While some of these vent locations are likely safe for the average homeowner to maintain themselves, great care must be taken when these caps are located in hard to get to areas. Sometimes very long ladders are necessary and when located on steep roofs sometimes more specialized skills are necessary for safety. Only persons trained to be on roofs should clean some of these vents.
But, take advantage of the cold---and put the wasps out in the cold.
Charles Buell, Real Estate Inspections in Seattle
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WA State, Home Inspector Advisory Licensing Board