Assess the Situation Identify the impacted drain and extent of backup Verify if various drains are impacted (implies principal line difficulty) Seek out obvious water problems or overflow Fundamental Do-it-yourself Ways Pour boiling water down drain Use plunger appropriate for sink/bathroom Try baking soda + vinegar Resolution Take out and https://www.kawatan.net/why-you-should-never-use-baking-soda-and-vinegar-to-unclog-a-drain/