To prevent clogged drains and sewer lines, there are a few key things you can do. First, use a drain screen to catch debris before it enters your drain pipe. Additionally, avoid pouring grease or oil down the drain, and dispose of food scraps and coffee grounds into the trash. Avoid flushing excess toilet paper, and use a plunger to clear minor clogs. Regular sewer line inspections and cleaning with a professional plumber from Mister Sewer can also help prevent drain and sewer blockages. By following these tips, you can keep your drains and sewer lines running smoothly and prevent a costly plumbing emergency.