Cleaning can often feel like an uphill battle. As soon as you clean one thing, you immediately notice the ten other things that need to be done. You follow a cleaning schedule, but it doesn’t seem to eliminate the problem. Are you doing something wrong? You might be. You could be making cleaning mistakes that actually make homes dirtier. Improper cleaning habits spread germs and grime, says Britney Lancaster, a professional cleaner and organizer in Los Angeles.