Signs of Bed Bugs: What to Look for Beyond Bites

Why bites are not enough

UC IPM notes that bed bug bites are difficult to distinguish from bites caused by mosquitoes, fleas and other arthropods. Some people show no reaction at all. Confirmation therefore depends on finding the insect or characteristic signs in the sleeping area.

Physical signs to inspect for

• Live adults or nymphs
• Dark reddish-brown or black fecal spots
• Light shed skins
• Eggs or eggshells in protected cracks
• Clusters of evidence around mattress seams, bed frames or headboards

Where to inspect first

Start close to where people sleep or rest: mattress seams, box spring edges, bed-frame joints, headboards, nearby nightstands and upholstered furniture. Use a flashlight and avoid moving potentially infested items into other rooms.

Travel and used furniture are important context

Bed bugs can be carried on luggage, clothing, bedding and furniture. A recent trip or second-hand furniture purchase can be useful context, but it does not prove the source. Apartments and other shared housing also require attention to adjoining areas when activity is confirmed.

When professional help is appropriate

Confirmed infestations can be difficult to eliminate and often require a combination of monitoring, physical methods, heat or steam where appropriate, targeted treatment and follow-up. For service options, see bed bug control in Whittier.