ASP.NET websites frequently utilize dynamic compilation, which leads to the accumulation of temporary files in the Temporary ASP.NET files directory, necessitating periodic manual removal to prevent build-up. Users of Octopus Deploy, who often perform continuous integration and frequent releases, can manage this issue using the File System - Clean ASP.NET Temp Files PowerShell script from the Octopus Deploy Library. This script, incorporated into the deployment process, removes directories older than a specified number of days, with parameters set for framework version and retention period. The script safely deletes code generation directories and is recommended to be executed before deployment to minimize downtime, especially in environments with multiple websites. For those seeking to avoid downtime and ensure robust deployments, configuring a custom compilation directory in the web.config file is suggested.