Bed bug sprays usually act as an insecticide and repellent. The best kind of bed bug sprays should kill bed bugs on contact and need to be used repeatedly to help eliminate your bug problem. According to the Texas A&M University, bed bug sprays are best used in combination with other bug control methods like natural bed bug powders. This is because bed bugs don’t build up resistance to natural bug powders and products like diatomaceous earth which kills bed bugs as long as the powder is dry.5
Specks of blood on bedding, mattresses, or upholstered furniture such as couches and headboards: Look carefully at your blankets, sheets, and mattress pads and then check the mattress and box spring. Are there specks of blood anywhere, especially near the seams? If so, there could be a bed bug infestation. You should also check for specks of blood on all upholstered furniture, including couches and headboards.
We recommend spraying Steri-Fab in areas where live bed bugs are visible. Steri-Fab combines a synthetic pyrethroid insecticide and isopropyl alcohol to kill bed bugs fast on contact. Steri-Fab also acts as a sanitizer. Steri-Fab does not leave any residual, meaning it can be applied virtually anywhere. Simply shake well, then apply to desired treatment areas. Insect mortality is imminent, generally within 10 minutes of spraying.
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.
The decline of bed bug populations in the 20th century is often credited to potent pesticides that had not previously been widely available.[44] Other contributing factors that are less frequently mentioned in news reports are increased public awareness and slum clearance programs that combined pesticide use with steam disinfection, relocation of slum dwellers to new housing, and in some cases also follow-up inspections for several months after relocated tenants moved into their new housing.[66]

Bed bugs could be hiding in all sorts of tight spaces in your room, like wood cracks, inside books and furniture, and along the baseboards and the edges of the carpet. In this step, we’re going to clean, vacuum, and steam those areas that bed bugs are likely to be. This will cut down on the bed bug population while making it harder for survivors to hide.
Once you’ve vacuumed and chemically treated your mattress and box spring, enclose them in encasement bags. If the bed bugs found a way inside the mattress, the odds are that the spray chemicals did not kill them. Encasement bags have special zippers that trap the bed bugs and prevent them from escaping. Keep these bags on for at least a year because a fully fed bed bug can live more than 10 months between meals.
If you think that by discarding the whole bed means getting rid of bed bugs, you are wrong. By moving the mattress and the bed frame, you not only risk moving the bed bugs all around the house, you are also missing out on many other spots these bed bugs could be at. For example, curtains, floor panels and skirting or even the door frames are able to hide these bed bugs very well. The root causes of the infestation must be eradicated fully.
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]
Units that produce “dry” steam are less likely to damage household goods. Steam must be at least 113 degrees Fahrenheit (F), the minimum temperature to kill bed bugs, and care must be taken to reduce pressure so that bed bugs are not literally “blown away” before they can be killed by the steam. Steaming should be avoided around hazards such as electrical outlets.
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.

Because bed bugs have become so prevalent in the past few years, many fear they’ll be their next victim. They became so anxious and paranoid of the possible bed bug presence. If you eliminate the pests though, you could have a certain sense of peace knowing that you would not be bothered or bitten them. However, you wouldn’t be able to sleep well for long if you would not kill bed bugs right and continuously do the bed bug preventive steps. 

Bed bugs occur in all regions of the globe.[7] Rates of infestations are relatively common, following an increase since the 1990s.[3][4][6] The exact causes of this increase is unclear; with proposals including greater travel, more frequent exchange of second-hand furnishings, a greater focus on control of other pests, and increasing resistance to pesticides.[4] Bed bugs have been known human parasites for thousands of years.[2]

Today, bedbugs can be found in every State in the United States, and almost every city. Bedbugs are so common now that the federal government considers them almost "epidemic". The National Pest Management Association has declared war on bed bugs and has held bedbug meetings all across the Nation to help educate pest control companies in an effort to help control them.
Once the mattress and box spring are dry, encase them in sealed bed bug encasements. Encasements are crucial, as they prevent bed bugs from entering or escaping the mattress and box spring, cutting off key hiding places. Remember to leave the encasements on for at least 18 months to ensure that any bed bugs already inside have starved to death. Once the encasements have been applied, you can put your mattress and box springs back on your treated bed frame, and put your laundered bedding back on your bed.
We recommend spraying Steri-Fab in areas where live bed bugs are visible. Steri-Fab combines a synthetic pyrethroid insecticide and isopropyl alcohol to kill bed bugs fast on contact. Steri-Fab also acts as a sanitizer. Steri-Fab does not leave any residual, meaning it can be applied virtually anywhere. Simply shake well, then apply to desired treatment areas. Insect mortality is imminent, generally within 10 minutes of spraying.
To kill bed bugs is to save yourself from a lot of problems. However, before you could eliminate them, there are several preparatory steps that you first have to take so you will know how to get rid of bed bugs. With all those problems and pre-elimination work, many think it is better to prevent the pests by using bed bug spray than to let them in and just get rid of them. 

"By every metric that we use, it's getting worse and worse," says Coby Schal, an entomologist at North Carolina State University in Raleigh. Health authorities and pest control operators are regularly flooded with calls, and the epidemic may not have yet peaked. And because bedbugs are indoor pests, there are no high or low seasons throughout the year, he adds, only continual bombardment. "It's just the beginning of the problem in the U.S.," Schal says.
Checking beds for bed bugs was a common practice long ago, especially while traveling. Travelers today should consider doing the same, preferably before unpacking. This would entail examining the bed sheets and seams of the mattress and perhaps box spring for signs of bed bugs, especially along the head (pillow end) of the bed. Experts also remove and check behind headboards since this is a frequent hiding place for bed bugs in hotels. Headboards are heavy and cumbersome, however, and untrained persons should not attempt removal themselves.
First, remove all affected areas such as bed linens, clothing, sheets and pillowcases and wash them in borax. For non-washable surfaces, as in drawers or cabinets, dust talcum powder on the affected area. Vacuum the area thoroughly and purchase an enzyme cleaner to clean all possible surfaces. If there are open spots or crevices in the wall, dust them with talcum powder and caulk them shut. This cleaning process should be repeated as often as possible to rid your home of the infestation.

Mattress Encasements:  Mattress encasements are large “fabric bags” that you place a mattress inside. Once zippered closed, any surviving bed bugs will eventually starve. You will need an encasement for each mattress and box-spring in your home. If there are bed bugs in your mattress or box-spring they will start to die within two weeks, inside an encasement, but encasements should be left on for at least a year.There are many types of encasements so it is important to make sure you use an encasement designed for bed bug control. 
Bed bugs tend to live in clusters similar to German cockroaches. Adult bed bugs generally travel 15 to 20 feet, or less, from their harborage sites. Common bed bugs feed on human blood just below the surface of the skin with their piercing-sucking mouthparts. Those bitten by a bed bug may develop small, white to red, hard welts at the bite site. These bites itch intensely.
Prior to the mid-20th century, bed bugs were very common. According to a report by the UK Ministry of Health, in 1933, all the houses in many areas had some degree of bed bug infestation.[65] The increase in bed bug populations in the early 20th century has been attributed to the advent of electric heating, which allowed bed bugs to thrive year-round instead of only in warm weather.[66]
Use precautions in your own home. Keep the plastic covering that comes on your mattress when purchased new. Purchase special bedbug covers for you mattress and box spring. Make sure that they are quality ones with heavy duty zippers and constructed with special fabric that doesn't rip easily. Don't buy the cheap versions which are not thick enough to prevent the bedbugs from sticking their feeding tubes into the skin through the cover.[19]

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]
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