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These are the signs of bed bugs to look out for:

• Blood or rust-colored stains on mattresses, fabrics, or upholstery

• Dark spots of excrement that look like dots from a fine-tipped permanent marker

• Tiny eggshells and yellowish shed skins

Droppings from cockroaches, squirrels, mice, bats, and birds can resemble rat poop, making it easy to confuse one for another. Mouse droppings are smaller and more pointed, cockroach droppings resemble tiny black specks or ground pepper, and bat guano can look similar but usually crumbles into powder. Bird droppings sometimes have a similar shape, but often include white uric acid deposits. If in doubt, it’s best to consult a pest control professional for proper identification and removal.

A temperature of 119 degrees Fahrenheit will kill bed bugs and their eggs within 90 minutes. No temperature kills them instantly, but if exposed to high temperatures over extended periods, bed bugs will be killed off. Bed bug eggs must be exposed to the same temperature for 90 minutes to reach 100% mortality.

Several skin conditions and insect bites can be mistaken for a tick bite, including mosquito bites, spider bites, chigger bites, and even allergic reactions. Tick bites often start as small red bumps, which may develop into a bullseye-shaped rash if Lyme disease is transmitted. However, similar-looking rashes can result from conditions like eczema, ringworm, or hives. Without a visible tick, it can be hard to confirm the source, so it’s best to monitor the area for changes and consult a doctor if symptoms like fever, fatigue, or worsening redness occur.