Yes, bed bugs can come back after a year. Bed bugs are excellent at reproducing and building up their colony size if they aren't fully eliminated. If you used a DIY treatment that didn't eliminate all the bed bugs in the colony, then there's always the chance that they'll remain in hiding until they've reproduced.
When bed bugs are in their dormant state, they do not need to feed. According to the University of Kentucky, bed bugs can survive 2 to 6 months without a meal. In extreme cases, when the temperature drops to 55°F or lower, they may survive a year or longer.
Bed bugs can live for as long as 4.5 months or more in an empty house before completely dying off. The two primary factors that determine how quickly or slowly the bed bugs could die off are the existence of a blood meal host, and the temperature of the house.
If you continue to get bed bugs, think about the places you frequent and inspect that location for bed bugs. See if you notice any signs of a bed bug infestation. However, the most common reason bed bugs come back is because you probably never fully got rid of them (and all of their eggs) to begin with.
You can either manually inspect the same areas each day, or some clients find it helpful to put a sticky adhesive trap around the bed legs which would pick up bed bugs that are on the move. If no bed bugs show up in the trap after several days, that's one indication that they have been completely eradicated.
Most people do not realize they have been bitten until bite marks appear anywhere from one to several days after the initial bite. The bite marks are similar to that of a mosquito or a flea — a slightly swollen and red area that may itch and be irritating. The bite marks may be random or appear in a straight line.
“People may have bed bugs and not know it because many people have no physical reaction to bed bug bites,” Dr. Harrison says. “That's why it's important for people everywhere to inspect for bed bugs regularly.”
Steam Clean Often
The heat of the steam can kill bed bugs and their eggs. Take your steamer and slowly spray each room with it. Pay extra attention to the baseboards, closet shelves, window trim, and even the carpet. Make sure the steamer is set to at least 160 degrees Fahrenheit and use a low setting for the airflow.
To lure bed bugs out of their hiding spots, you can use a steamer or a hairdryer to heat areas such as mattresses. Neither of these is hot enough to kill the bed bugs, but it can trick them into thinking a human host is near. You can also keep an eye out at night to locate their nests when they are most active.
Among the popular and most effective DIY home treatments for bed bugs is rubbing alcohol. You can dilute it and place it a spray bottle and simply spray the infested areas. The alcohol will kill bed bugs almost immediately. It also evaporates quickly, leaves no traces or bad smells.
Yes! Washing your linens in a hot water wash has proven to be effective in killing bed bugs. Although this may not get rid of your infestation entirely, it will control the bed bug problem.
It's best to keep the infestation localized to as few rooms as possible. This will also make remediation easier. Do continue to sleep in your bedroom after identifying a bed bug infestation. If you move rooms or start sleeping on the couch you run the risk of contaminating these other areas of your home.
The typical life span of a bed bug is between 10 months and a year. In general, bed bugs seek a meal of blood every 4 or 5 days. However, they can survive for weeks to a year without eating. Take care to read all labels before applying any pesticides.
Bed bugs may live for several months after incorrect spraying. These resilient pests will migrate to other crevices that did not receive the treatment. It will take about three weeks to eliminate bed bugs if sprayed correctly.
Bed bugs live primarily indoors, giving them the heat they need to survive the winter. As long as they have a food source as well as the warmth they need, they'll happily remain active in your home throughout the year. If they don't have a food source, they can go for several months without eating and still survive.
You can't starve them out -- The average adult bed bug can survive more than a year (and maybe as long as 18 months) without feeding. It's possible for a piece of furniture to sit in a storage facility, garage or warehouse for many months and still harbor healthy, hungry bed bugs waiting for their next meal.
They're attracted to dark-colored sheets and bedding and are inclined to congregate around black or red fabric. (It used to be speculated that bed bugs preferred black or red bedding because the color was similar to blood, but it's probably because darker bedding offers more protection.)
Myth: Bedbugs won't come out if the room is brightly lit. Reality: While bedbugs prefer darkness, keeping the light on at night won't deter these pests from biting you. Myth: Pesticide applications alone will easily eliminate bedbug infestations.
Bed bugs hate scents such as lemon scents, cinnamon oil, neem oil, spearmint, and silicone. They will hide from you when you use these smells. This is so that they can easily attack and feed off of you! Even just the threat of these scents will keep them away from your house for good.
Bed bugs are easy to kill using heat. Their thermal death point is reported to be 114-115° F. Putting infested clothing in a hot dryer is an excellent way of killing bed bugs and their eggs. Heat can also be used to kill bed bugs and their eggs in furniture and carpeting.
Diatomaceous earth is a great chemical-free option for getting rid of a number of pests, including bed bugs. This natural powder contains properties that can dehydrate bed bugs, absorbing their fat and oil, and killing them dead as a doornail. Spray or sprinkle in infected areas and allow it to sit for at least a week.
Dark spots (about this size: ), which are bed bug excrement and may bleed on the fabric like a marker would. Eggs and eggshells, which are tiny (about 1mm) and pale yellow skins that nymphs shed as they grow larger.
Light Bed Bug Infestation
Minimal fecal staining (small black stains in areas of travel, feeding, and harborage). Fecal stains will be anywhere the bed bugs hide or travel and can be used to detect hot spots. Minimal cast skins (exuviae are the skins shed during the molting process).
Tell someone!
Don't keep this to yourself. Yes, it can feel intimidating telling someone about an issue you might feel embarrassed about, but the relief of bringing someone into the experience of this issue can be a huge help and can take away the sense of isolation often incurred when someone has bed bugs.