Bed Bugs And The Guest Room Nobody Checks

Check the guest bed before company arrives, then strip it the day they leave. Pull the sheets back, look along the mattress seams and down into the bed frame crevices, and run the bedding through a hot dryer. A spare bedroom hides bed bugs longer than any other room in the house, for a simple reason: nobody is sleeping in it to notice.

Heat is our lead method for bed bugs because it reaches eggs, which is exactly what a long unnoticed problem leaves behind. Our ThermaLock heat treatment page covers how that works. This post is about the months before anyone would need it.

Why A Spare Room Hides Them Longer Than Any Other Room

Most bed bug problems are found by the person getting bitten. A guest room removes that. For eleven months of the year there is nobody in the bed, so the only thing left to find is physical evidence on a mattress nobody looks at.

Meanwhile the insects wait better than people expect. Ohio State University Extension's bed bug fact sheet (HYG-2105) tells homeowners to keep a treated mattress encased because bed bugs can live six months or more without a blood meal. The National Pesticide Information Center puts an isolated bed bug at roughly three months without feeding at room temperature, and says it survives considerably longer in cold conditions. The University of California's statewide IPM program gives the range as 20 to 400 days, depending on temperature and humidity.

Those numbers point at the awkward truth about spare rooms in Ohio houses. The cool, closed, rarely heated bedroom over the garage is a better waiting room than a bedroom somebody uses. The National Pesticide Information Center notes that drying out, rather than starvation, is usually what finishes off an isolated bed bug, and that low indoor humidity speeds that up. A furnace running all winter in a lived-in room works against them. A cold spare room with the door shut does not.

The practical version: a visitor in late November can leave something behind that you do not meet until spring.

What To Look For On A Bed Nobody Has Slept In

You are not looking for insects walking across a pillow. On an unused bed the evidence is small and still: eggs, shed skins, and dark spotting along a seam. The U.S. EPA describes the sizes you are working with, and they are the reason a quick glance misses everything.

Ohio State University Extension puts the search order plainly: bed bugs turn up first in the tufts, seams and folds of a mattress, and spread later into the crevices of the bedstead. So the mattress is where you start, and the frame is where a problem that has had time hides. Ten minutes with a flashlight covers it:

• Strip the bed fully. A fitted sheet hides the piping where eggs sit.
• Run a finger along every mattress seam, all four sides, then the piping on the box spring.
• Lift the mattress tag. It is a flap, and flaps are harborage.
• Look into the bed frame joints, especially where a wooden rail meets a post.
• Pull the headboard off the wall, or at least get a light behind it.
• Check the nightstand drawer runners and the underside of anything upholstered in the room.

If you want the full sweep rather than the bed, our post on how to check for bed bugs walks the rest of a room.

Where Should A Guest Put A Suitcase?

Anywhere except the bed and the floor beside it. A hard surface is the goal: a luggage rack, a dresser top, a bathtub for the first hour. The EPA's guidance for returning travelers is to keep luggage out of the bedroom entirely, in a basement or garage, and never under the bed. The same logic applies to a bag that just arrived in your house.

The other half is the room itself. Ohio State University Extension advises reducing the items under a bed and in a bedroom to take away hiding spots, which is awkward advice for the average spare room, because the average spare room is also storage. Boxes under the guest bed, a stack of winter coats on the chair and a bin of fabric in the closet all give a hitchhiker somewhere to go that is not the mattress you check.

You cannot inspect a guest's luggage, and nobody should try. Set the room up so the suitcase never touches soft furniture, and the question stops mattering.

Your Guest May Not Know, And May Never Say

Waiting for someone to mention bites is not a plan. The EPA describes reactions to bed bug bites as running from no reaction at all, through a small bite mark, up to severe allergic reaction and, rarely, anaphylaxis. A person can be bitten for weeks and show nothing. Somebody staying in your house has no way to tell you what they cannot see.

It also helps to keep the stakes straight. The EPA classes bed bugs as a public health pest while stating they have not been shown to transmit disease. What they do cause is bites and allergic reactions, secondary skin infections from scratching, and the anxiety and insomnia that come with finding them. Bed bugs are hitchhikers that arrive on luggage and used furniture. Nothing about them is a verdict on anybody's housekeeping, which is worth remembering before a conversation with a relative.

The Laundry Run After Everyone Leaves

The dryer does the work, not the wash. EPA integrated pest management guidance is specific: put bedding and clothing in the dryer on high for 30 minutes, and note that washing alone generally will not kill bed bugs. Treat the wash as laundry and the dryer cycle as the treatment.

Do the whole set, not just the sheets: pillowcases, the mattress pad, the throw blanket somebody used on the couch, the towels, and the bedding off an air mattress. Then leave the guest bed stripped, or encased. Ohio State University Extension's instruction for a mattress is to vacuum or scrub it first and then enclose it in a zippered encasement, and it is blunt that the cover only works while it stays zipped and free of holes or tears. A light colored encasement on a bed that sits empty also makes the next check a ten second job instead of a ten minute one.

If somebody in the house has been travelling rather than hosting, the arrival routine is a different sequence. Our post on hotel bed bugs and the check before you unpack covers that side.

What If You Find Something In January?

Get it identified before anything else happens. Mistaken identity is common enough that Ohio State University Extension publishes a separate fact sheet on bed bug look alikes (ENT-0109), which opens by noting that Ohio is among the most bed bug infested states and that correct identification is the starting point for managing them. Carpet beetle larvae and bat bugs both get accused regularly. Bed bug inspections are free, so there is no reason to settle it from a phone photo.

If it is confirmed, a long quiet infestation is the case heat handles best, because eggs are the part that outlasts everything else. EPA guidance for heating furniture and rooms is to reach at least 120 degrees Fahrenheit and hold it for 90 minutes to be sure eggs die, which is not something a space heater and a closed door accomplish. ThermaLock kills every life stage including eggs, usually in a single day, and leaves no chemical residue behind in a room where grandchildren sleep twice a year. Our North Canton heat treatment and Akron heat treatment pages cover the local side of it.

One thing not to do first: drag the bed to the curb. The insects are rarely only in the mattress, so the bed leaves and the problem stays, and a mattress on a tree lawn is somebody else's infestation by Tuesday. Ohio State University Extension says a mattress that really is unusable after treatment should be wrapped in plastic before it leaves the building and then defaced or destroyed so nobody takes it home.

Hosting season is a good excuse to look at a room that gets ignored the rest of the year. If something on the guest bed does not look right, schedule a free inspection or call 330-494-6199. We will tell you what is there before anyone talks about treating it.