The answer to 'why is my drainage system pests' is that a poorly functioning drainage system can attract pests like mosquitoes, rodents, and other insects. Common causes include clogs, broken pipes, or improper grading that leads to standing water. Symptoms may include visible pests, foul odors, or water pooling around the home.
To fix a pest-prone drainage system, first inspect the area for any blockages or damage. Clear out debris, repair cracks or breaks in the pipes, and ensure proper grading and drainage away from the home's foundation. If the issue persists, it's best to call a professional landscaper or drainage specialist to fully evaluate and resolve the problem.