Most clogs are preventable. A few small habits keep your plumbing flowing.
Keep grease out of the kitchen sink. Let cooking fat cool and throw it in the trash instead of rinsing it down the drain.
Use drain strainers in showers and tubs to catch hair, and empty them regularly.
Only flush toilet paper. Wipes marketed as flushable often are not, and they are a leading cause of sewer backups.
Flush drains with hot water now and then, and schedule a professional cleaning if you notice slow flow.