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Yes, humans carry fleas. Although fleas are primarily associated with dogs and cats, they are attracted to the warmth and carbon dioxide of mammals, including humans. The difference is that most fleas will only choose animals as their hosts. They may bite humans, but they don’t tend to stick around on humans for long. The one exception is the Pulex irritans, also called the human flea, which prefers human blood.

Yes, stink bugs can play dead. Stink bugs don’t just release bad odors, they have a defense mechanism to pretend to be dead, even when flicked over and swept into a trash bin. That’s how stink bugs may keep coming back even if you thought you got rid of them.

A strong honeybee colony can usually fight off the aggressive presence of yellow jackets. However, weaker honeybee colonies with fewer workers are especially vulnerable to yellow jackets. If yellow jackets gain entry into a weakened honeybee colony, they can easily kill the honeybees and empty the hive of all its contents. 

Certain strong smells may help repel bats, though this is not a foolproof method and is best used in conjunction with other deterrence strategies. Scents like peppermint oil, eucalyptus, cinnamon, cloves, and mint are often suggested as natural remedies. To create a spray, you can mix two cups of warm water with half a cup of sugar and a few drops of your preferred essential oil. Apply this mixture using a spray bottle to possible entry points and throughout the affected area, such as an attic. While this home remedy is popular, evidence supporting its effectiveness is limited.