The size of bed bug bites varies with a number of different factors. Bed bugs inject an anti-coagulant along with their saliva when they pierce the skin to take a blood meal. This anti-coagulant is mostly responsible for how a person reacts to the bite and determines the size of the bug’s bite. Since people will have various sensitivities to the bed bug’s bite, the size of the bite will vary, as well. Another factor that influences the size of a bed bug reaction is the number of times a person is bitten. Bite reactions of people bitten many times are also variable, and their response may be either more or less intense as the number of bites increases. 

We are often asked, "How do you kill bed bugs?" While we would love to give a simple answer, this is actually a loaded question. There are many ways to kill a bed bug but, if you want to kill all of the bed bugs in your home or business, it is important to pay attention to the details. Here are some ways you can kill bed bugs, and what you should know about each.
Bedbugs lurk in cracks and crevices and they've been living on human blood for centuries. Though they aren't known to transmit disease or pose any serious medical risk, the stubborn parasites can leave itchy and unsightly bites. However, bedbugs don't always leave marks. The best way to tell if you have a bedbug infestation is to see the live, apple-seed-size critters for yourself. Unfortunately, once bedbugs take up residence in homes and businesses, they can be difficult to exterminate without professional help.

Turns out, C. lectularius is also forming a resistance to other insecticides, according to a study published online April 10, 2017, in the Journal of Economic Entomology. The researchers, from Purdue University, found that three out of 10 bedbug populations collected in the field showed much less susceptibility to chlorfenapyr, and five of the 10 populations showed reduced susceptibility to bifenthrin, according to a post on Entomology Today. The scientists defined "reduced susceptibility" as a population in which more than 25 percent of the begbugs survived after seven days of exposure to the particular insecticide.


Bed bugs are obligatory bloodsuckers. They have mouth parts that saw through the skin, and inject saliva with anticoagulants and painkillers. Sensitivity of humans varies from extreme allergic reaction to no reaction at all (about 20%). The bite usually produces a swelling with no red spot, but when many bugs feed on a small area, reddish spots may appear after the swelling subsides.[15] Bedbugs prefer exposed skin, preferably the face, neck, and arms of a sleeping person.
If at all possible, pull up the carpet where it meets the wall and puff powder around the whole perimeter of the room. Inside outlet boxes is a great place to use powders because sprays and electricity don’t mix. Bellow dusters work great for spreading residual insecticide powder. An old makeup brush is a good tool to spread the dust around on hard surfaces. Bed bug powders are available the same places you’ll find the spray pesticides.

How to treat and prevent chigger bites A chigger is a form of mite that feeds on human skin cells. Although they are so small that the naked eye cannot see them, chiggers can inflict extremely itchy bites that can last up to a week without treatment. Here we look at how to avoid getting bitten as well as how to recognize and treat any existing bites. Read now

Bed bug bites are caused primarily by two species of the insect Cimex: Cimex lectularius (the common bed bug) and Cimex hemipterus.[3] Their size ranges between 1 and 7 mm.[7] They spread by crawling between nearby locations or by being carried within personal items.[2] Infestation is rarely due to a lack of hygiene but is more common in high-density areas.[8][2] Diagnosis involves both finding the bugs and the occurrence of compatible symptoms.[5] Bed bugs spend much of their time in dark, hidden locations like mattress seams or cracks in the wall.[2]
Dusts have been used to ward off insects from grain storage for centuries, including plant ash, lime, dolomite, certain types of soil, and diatomaceous earth or Kieselguhr.[60] Of these, diatomaceous earth in particular has seen a revival as a nontoxic (when in amorphous form) residual pesticide for bed bug abatement. While diatomaceous earth performed poorly, silica gel may be effective.[61][62]
Bed bugs are highly vulnerable to heat; exposing them to a certain amount of direct heat will kill them instantly, while lower temperatures can kill them in a matter of minutes. This is why many forms of heat treatments are recommended. Some methods, such as steamers and portable heaters, have been proven effective through professional use and are quickly becoming standard issue in holistic treatment arsenals.

The most frequent bed bug encountered in the United States is Cimes lectularius, the common bed bug. However, one other bed bug species occasionally found in the southern United States, is Cimex hemiperus, the tropical bed bug. Both of these species are oval, flat and reddish brown. They range from one-fourth inch to five-eighths inch in length. Nymphs and adults have piercing-sucking mouthparts and are incapable of flight. However, small stubby wing remnants can be observed on the adults.
First up are the contact sprays, like STERI-FAB and JT Eaton Kills Bed Bugs. These will kill quickly, but evaporate shortly after, leaving no long-lasting protection. Spray along baseboards, below drawers and on drawer slides, behind cabinets, and behind night stands. Follow up with a residual spray, such as Bedlam Plus and JT Eaton Kills Bed Bugs Plus. Residual sprays will offer long-lasting protection against bed bugs and hatchlings. Bedlam Plus is ideal for cracks and crevices throughout the room, while JT Eaton Plus can be used below the cushions and bases of sofas, chairs, edges of carpets and other fabric items.
The exact causes of this resurgence remain unclear; it is variously ascribed to greater foreign travel, increased immigration from the developing world to the developed world, more frequent exchange of second-hand furnishings among homes, a greater focus on control of other pests, resulting in neglect of bed bug countermeasures, and increasing resistance to pesticides.[4][38] Declines in household cockroach populations that have resulted from the use of insecticides effective against this major bed bug predator have aided the bed bugs' resurgence, as have bans on DDT and other potent pesticides.[39][medical citation needed]
Alcohol will kill bed bugs but not their eggs and will need to be used often to control infestation. It is not an effective way to get rid of bed bugs permanently. If you want to use this bed bug treatment you need to mix nine parts 91 percent isopropyl (rubbing) alcohol with one part water. Place the solution in a chemical sprayer to cover large areas. Use a spray bottle for small areas and to get into crevices. Spray all areas including head/foot boards, hard surfaces, base boards, door jams and any other bed bug hiding spots.
Insecticides might also have their work cut out for them: Entomologists have known that the common bedbug has built up resistance to some typical insecticides such as those containing certain pyrethroid chemicals like deltamethrin, according to Entomology Today. Deltamethrin apparently paralyzes an insect's nervous system, according to Cornell University.

Research has shown that some bed bugs are resistant to the pyrethroid pesticides that have been most commonly used in recent years by pest management professionals. Likewise, pyrethroids such as deltamethrin and permethrin have been among the active ingredients most commonly available in pesticides at retail stores. The ongoing use of pyrethroids has undoubtedly contributed to the resistance we see today in some bed bug populations.
What can I do about head lice? Head lice are tiny, parasitic insects that live on the scalp, usually on young children. They are not dangerous but are highly contagious and can be difficult to remove. Treatment involves OTC or prescription medication, but resistance to these treatments is growing. Learn more about treatment and home remedies here. Read now

Itchy swollen bites may be the first sign of a bed bug problem. However, these itchy bites can take as long as 14 days to develop in some people, so it's important to look for other clues if you are concerned about an infestation. Bed bugs typically infest mattresses, box springs, bed frames, and couches. You may be able to find them hiding within the cracks and crevices of beds, furniture, floors, and walls. Bed bugs often leave evidence of small dark stains (fecal droppings) and rusty red spots (bloodstains) on bedding sheets, mattresses, and other areas they hide in or travel along. Heavy bed bug infestations can cause a sweet, musty smell.

Some oils like tea tree and neem oil can't kill bedbugs, but they work well to repel them. Tea tree oil is an extract from the Melaleuca alternifolia plant—it can cause various health problems with pet birds, cats, and small dogs. If there are pets in the house, look for other safer choices. If you use the oil, apply it in small quantities to the skin to repel bed bugs. Since bed bugs are active at night, apply it before bedtime.
Vinegar can kill bed bugs if it comes into direct contact with them and it may help repel them from areas where it is sprayed. However, vinegar cannot be your only defense against bedbugs. For one, vinegar only works if you can see the bugs, and often they will hide or even just be too small to see easily. Second, vinegar will not kill bedbug eggs, which means that vinegar alone will never stop an infestation. Vinegar also needs to be reapplied frequently to have any effectiveness.
Some people develop allergic reactions to bedbug bites, which can include a fever, difficulty breathing, hives, or a swollen tongue. Others may develop an infection where the bite starts oozing pus. If you experience either of these reactions or you develop blisters where the bites occurred, it’s a good idea to make an appointment with a dermatologist. 

If you need to treat items that can’t be laundered or steamed, you can use a portable bed bug heater, like a ZappBug Oven or a ThermalStrike Ranger. These heaters can safely treat household items like books, papers, CDs, and dry clean only clothing. Not only are bed bug heaters an effective part of a bed bug treatment process, but they’re one of the most popular prevention tools on the market. When you come home from a trip, just put your suitcase in the heater, zip it shut, and turn it on. In just a few hours, any bed bugs or eggs hiding in your belongings will be dead.
Pyrethroid sprays are among the stronger and longer-lasting pesticides, but most bed bugs are resistant to these sprays to some degree. Special care should be taken when using pyrethroid sprays, especially when children are present. Only use pyrethroids in places indicated on the label. Do not spray electrical outlets with any type of liquid spray. Spraying should be done when children are not present, and all label directions followed carefully.
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Isolating your bed from the rest of the house.  If you don’t use a bed, purchase a frame that gets your mattress off the floor and install bed bug interceptors under all feet of the bed frame to keep bed bugs off your bed while you are sleeping. Interceptors are special platforms or cups that are purchased to prevent bed bugs from climbing on to your bed.  An interceptor can be as simple as a sticky card placed under a bed post (sticky and messy).  Better are one of the commercial pitfall traps made specifically for this purpose.  The Climbup™ Bed bug Interceptor and BlackOut BedBug Detector (Google them) are two such products sold online. Relatively inexpensive, these cups trap bed bugs attempting to climb (or exit) the bed. If you have encased your bedding, treated your bed frame thoroughly and installed interceptors, you will be instantly protected against bed bugs.  Don’t take out your clean bedding or put it back on the bed until the bed has been treated (and dried) and encasements installed. And note that for this method to be effective, beds and bedding must not touch the floor, furniture or walls.  This would provide bed bugs other ways to climb onto the bed and foil your defenses.
Monitor Bed Bug movement with Traps. Bed Bug traps don't work to control bed bugs - they only monitor bed bug movement. Try using Catchmaster 288i Professional Bug Traps by placing them against walls, behind furniture, sticking them under bedframes (yes they work upside down), and anywhere you think bed bugs could be crawling to get back to the bed. Inspect these traps every few days. If you capture bed bugs, then you may have to retreat and do this entire procedure over again. If the traps are empty, then pat yourself on the back for a job well done, but don't think that bed bugs are gone forever. They could be walking around the trap or just waiting for the comforter to hit floor before they climb back into bed!
Both of these types of Hemiptera are sensitive to extreme temperatures. It may be necessary to rid the infestation by exposing the area to extreme heat or cold; they are most comfortable in temperatures around eighty degrees Fahrenheit. Raising the temperature to ninety-seven to ninety-nine degrees may kill off a significant portion of the population.
Mix an insecticide labeled for use on bed bugs, such as Temprid FX, with water in a pump sprayer using the ratio found on the product label to create a bed bug spray. Spray onto baseboards, in corners, around door and window frames, around bed frames, and under furniture. Do not broadcast spray an entire carpet or floor. Allow the spray to dry before moving on to the next step.
Bed bug infestations are primarily the result of two species of insects from genus Cimex: Cimex lectularius (the common bed bug) and Cimex hemipterus.[3] These insects feed exclusively on blood and may survive a year without eating.[3] Adult Cimex are light brown to reddish-brown, flat, oval, and have no hind wings. The front wings are vestigial and reduced to pad-like structures. Adults grow to 4–5 mm (0.16–0.20 in) long and 1.5–3 mm (0.059–0.118 in) wide.
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