Hello, today I was here for your one time service. I applied a liquid residual throughout the hole of the yellow jackets from the crawl space and exterior of the vent. I knocked down the old mud daubers nest from the attic area and disposed of it as well. I’m unable to remove the yellow jackets nest, I’m not permitted to remove insulation. Please allow 7-10 days for the product to take effect. If you have any issues please contact our office. Thank you for choosing green pest solutions.