People don't often consider bed bugs until they've left their mark. The appearance of flat, red welts in zigzag lines or small clusters is a key sign of bed bugs on humans. Bed bugs can also leave their bites in straight rows and, while they don't spread diseases to humans, their bites are quite irritating and scratching them can lead to bleeding and infection.
My boyfriend is staying with a man who rents a room out in his house. The last tenants had bed bugs and the living room couch and everything is infested and theyve been gone for a month. The bugs were dormant until a week or two ago. The man has sprayed the house with something that is supposed to kill bed bugs yet my boyfriend is continuously being bitten. We counted around 100 bites. They are swollen and the itching is making him crazy. He is unable to sleep at night. We are trying to convince the man to just throw the couch out. Since he has no carpet we believe the couch is their main breeding ground and the sprays DID NOT WORK.

Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.
Avoiding repeated bites can be difficult, since it usually requires eradicating bed bugs from a home or workplace; eradication frequently requires a combination of pesticide and non-pesticide approaches.[3] Pesticides that have historically been found to be effective include pyrethroids, dichlorvos and malathion.[4] Resistance to pesticides has increased significantly over time and there are concerns of negative health effects from their usage.[3] Mechanical approaches such as vacuuming up the insects and heat-treating or wrapping mattresses have been recommended.[3]
Bites on dogs and cats will look much like bites on people, and the pet owner may actually suspect a mosquito or flea bit the pet. As with people, bed bugs do not stay on pets, but return to a protected harborage site after feeding. In addition to bites, the presence of the bug’s feces, cast skins and the animal’s irritation at night are also indicators of bed bugs biting pets. Therefore, one of the best things to do is inspect the pet’s bedding and frequently groom the animal while being vigilant for the telltale signs of bed bug presence.
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