Pour boiling water down the drain daily for several days
Scrub the drain walls and drain opening with a stiff brush
Clean the drain stopper, overflow, and surrounding area
Remove hair, slime, and debris from the drain trap if accessible
Use an enzymatic drain cleaner to break down organic buildup
Flush the drain with baking soda followed by vinegar, then hot water
Fix leaks and eliminate standing water around sinks and tubs
Keep drains dry when not in use
Cover drains at night if needed
Clean garbage disposals thoroughly
Empty and clean trash cans and recycling bins nearby
Check for and remove breeding sources in damp areas
Repair damaged plumbing or slow drains
Seal gaps around pipes and drains
Use sticky traps near the drain to monitor activity
Call a licensed plumber or pest control professional if the problem persists