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Bed bugs bite your body to feed on blood. When they bite, they inject an anticoagulant, which is why you may see blood stains on your sheets if you have an infestation. The bed bugs tend to bite in clusters, so the bite marks will look like itchy, red spots in zigzagging lines of three to five bites per cluster on your skin.

The bites are itchy, but for most people, they do not cause serious or long-term health complications. Itching the wound excessively could lead to an infection, and some people are allergic to bed bugs.

It is highly unlikely that fleas will go away on their own without treatment. Female fleas can lay dozens of eggs per day—up to 50—causing their numbers to multiply quickly and spread throughout your home. An adult flea can live for around 100 days or even up to a year as long as it has access to a host, such as a pet or human. Even without a host to feed on, fleas can survive for weeks. Because of their rapid reproduction and resilience, it's best to tackle a flea problem as soon as possible. Hiring an exterminator is recommended to prevent the infestation from worsening.

Most DIY roach fogger products are made of pyrethroid pesticides that come with their own unique risks and benefits. They also contain aerosol propellants that disperse the pesticides by creating a fog that fills the entire room. Read all labels carefully before purchasing a fogger product to ensure that you understand how to properly handle the ingredients that you are introducing into your home.

Cockroaches are attracted to the smell of food. They're particularly attracted to grease, meat, cheese, sugar, and starch. Any rotten food such as fruits or vegetables puts off a strong odor that attracts the pests as well. Even dirty clothing can be enticing for cockroaches, which is why they're often found in laundry baskets.