You paid for a treatment. For two weeks, nothing. Then you wake up with three bites in a row on your forearm, and there it is again: a dark speck moving along the mattress seam.
That does not automatically mean the technician did a bad job, and it does not mean you brought in a fresh infestation. Bed bugs come back for a small number of predictable reasons. Once you know them, the problem stops feeling like bad luck and starts looking solvable.
Most guides on how to get rid of bed bugs jump straight to a list of products. The products matter less than the biology.
Reason one: the eggs were never killed
This is the big one.
A female bed bug lays 200 to 500 eggs over her lifetime, usually two to five a day, and those eggs hatch in about 10 to 15 days at room temperature, according to UC Statewide IPM Program. The eggs are roughly 1 millimeter, pale, and cemented into cracks where a spray nozzle cannot reach them.
Most liquid insecticides are far less effective on eggs than on live bugs. A treatment can kill every adult and nymph in the room and still leave a viable clutch behind. Ten to fifteen days later they hatch, bites return, and it feels like the treatment failed.
It did not fail. It just did not cover the hatch window, which is why good companies schedule a follow-up instead of treating once and walking away.
Reason two: they were never where you were treating
Bed bugs feed on you and then leave. They do not live on your body, and they often do not live in the mattress either.
UC IPM notes that hiding places are typically within six feet of where people sleep or rest, and the list is longer than most people expect: mattress seams and tufts, the wood joints of a box spring, cracks in the bed frame, behind the headboard, behind baseboards, under loose wallpaper, behind picture frames, and inside furniture, appliances, electronics and upholstery.
Adults are about the width of a credit card, as the EPA puts it, so a gap you would never think of counts as shelter. A recliner where someone naps counts. If the inspection covered the bed and the real harborage was the upholstered chair eight feet away, the population survives untouched.
Reason three: the product does not work on that population
Some bed bug populations have developed resistance to pyrethroid insecticides and can no longer be controlled by them, per UC IPM. Pyrethroids are the active ingredient class in most over the counter bed bug sprays.
This is why store-bought spraying so often produces a short lull and no real change. You kill the individuals that walk across a wet surface and select for the ones that do not.
Foggers are the worst version of this
The EPA’s guidance is blunt: foggers should not be used as the sole source of bed bug control, because the pesticide has to physically contact the insect, and if it does not reach the cracks where bed bugs hide, they will not be killed.
What a fogger reliably does is push bugs deeper into wall voids and along baseboards into adjoining rooms. A problem contained to one bedroom becomes a problem in three.
What actually kills them
The honest answer to how to get rid of bed bugs is that no single tool does it. Insecticide alone will not control an infestation, UC IPM states plainly. What works is a combination, applied on a schedule that accounts for the egg hatch.
Heat, at the right temperature for the right duration. Current recommendations for commercial heat services call for at least 140°F for two hours, or 130°F for three hours. The minimum lethal temperature is 113°F, but brushing past that number briefly does nothing. Heat works because it penetrates the harborage you cannot see, which is precisely the gap that sprays leave.
Your clothes dryer. For bedding, clothing and soft goods, the hottest dryer setting with 10 to 15 minutes of exposure is genuinely effective, and it is free. This is the single highest-value thing you can do yourself.
Cold, if you are patient. The EPA’s method is a sealed bag in a freezer at 0°F for three days, checked with a thermometer, since home freezers are not always set that low.
Steam. Effective at 130°F or above, but the airflow has to be gentle. A forceful jet scatters bugs instead of killing them.
Encasements. Sealing a mattress and box spring traps whatever is already inside, and those bugs starve. That matters more than it sounds, because bed bugs can survive 20 to 400 days without feeding depending on temperature and humidity. Leave encasements on. Do not pull them off after a month.
One local warning
In July, plenty of people here try to bake infested items in a closed car, and a car in Indio will easily pass 113°F. The problem is control. You cannot verify that the core of a duffel bag held 130°F for three straight hours, and the EPA cautions that do-it-yourself heat treatments might not work. Use it as a supplement, never as your treatment.
Why this valley sees so much of it
Bed bugs move with people and luggage, not with dirt. Rudy’s bed bug service page makes the same point: they are not caused by dirty conditions.
What the Coachella Valley has is turnover. Snowbird season fills homes that sat empty half the year. Vacation rentals and resort rooms in Palm Springs, La Quinta and Palm Desert cycle new suitcases through the same bedrooms every few days, and festival season concentrates that harder. Every handoff is a chance for one fertilized female to arrive in the seam of a bag, and one female is enough to start over.
Attached units add a second problem. Bed bugs travel along shared walls and through utility penetrations, so treating one condo while the neighbor does nothing tends not to hold.
Preparation is not optional
Preparation directly determines whether the treatment reaches the insects. Laundering and bagging soft goods, emptying closets and dressers, pulling furniture off the baseboards, and vacuuming with a crack and crevice tool all remove hiding places and expose the rest. Rudy’s publishes its bed bug preparation checklist so you can work through it before the appointment.
Skipping prep is the most common reason a good treatment underperforms, and it is the part you control completely.
Frequently asked questions
Can bed bugs come back after a heat treatment?
Yes, though usually not from survivors in the treated area. Heat that reaches 130°F to 140°F throughout the space kills all life stages including eggs. Recurrence after heat is more often reintroduction, from an untreated adjoining unit, a storage area that was not heated, or luggage brought back in.
How long should I still see bed bugs after treatment?
Seeing a few in the first two to three weeks is normal, because eggs present at treatment hatch in roughly 10 to 15 days. Activity that is still climbing after a month, or bites in a new room, means the population was not fully located and you should call for a follow-up inspection.
Do I have to throw out my mattress?
Usually no. A sealed encasement traps whatever is inside and those bugs starve, which is cheaper and less disruptive than replacement. Discarding a mattress without treating the room often just infests the new one.
Are bed bugs a sign of a dirty house?
No. They feed on blood, not crumbs, and they arrive on luggage, secondhand furniture and clothing. Clutter makes them harder to find and treat, but cleanliness has nothing to do with whether you get them.
How do I avoid bringing them home from a hotel?
Keep luggage off the bed and off upholstered furniture, and check the mattress piping, seams and headboard cracks for dark excrement spots that bleed into fabric like a marker. At home, run everything washable through the dryer on high for 15 minutes.
The short version
Bed bugs come back after treatment because eggs survive, because harborage gets missed, or because the product no longer works on that population. The fix is not a stronger chemical. It is thorough inspection, heat or steam at verified temperatures, encasements left in place, honest preparation, and a follow-up timed to the egg hatch.
If you are two rounds in and still finding them, stop buying products and get the harborage mapped properly. Rudy’s Termite & Pest Control takes an integrated pest management approach that leans on inspection and non-chemical tools first, with service across Palm Springs and the surrounding cities.
No honest company will promise a bed bug problem disappears in one visit. What a good one does is find every place they are living, treat on a schedule that matches how they breed, and come back to verify. Call (760) 775-7216 to set up an inspection.