The signs of a bed bug infestation include itchy, red bite marks on the skin and various forms of physical evidence on or near your bed. Look for reddish or rust-colored stains on sheets from crushed bed bugs, as well as small, dark fecal droppings. You might also find the bugs themselves, their tiny eggs, or the pale, molted skins (casings) they leave behind. In some cases, a persistent musty odor may be present. If you notice any of these signs, calling a professional exterminator is the most effective way to handle the infestation.

Besides reptile sightings, look for droppings resembling small pellets. Shed skin left behind during growth is another clue. Unusual chirping or rustling sounds could also suggest an infestation. If unsure, consulting a professional can provide accurate identification and effective solutions for managing the situation. If proper pest prevention measures aren't taken, a lizard can live up to five years. And that's a long time to have an undesirable roommate.

Neither the black widow nor the brown recluse are deadly spiders, and North America has no deadly species. However, other places in the world do, including Australia, which is home to the funnel web spider, considered the world’s deadliest spider. However, Australia has not reported deaths from a funnel web spider bite over the past few decades after developing an antivenom.

To keep animals out, you must prevent them from entering. As long as they can get in, the problem will persist. That said, consider making your attic less inviting using deterrents like motion-activated lights or ultrasonic devices. Additionally, keeping a well-maintained, clean, and uncluttered attic that you regularly inspect for activity may make the space less attractive to critters.