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It can be difficult to know what type of animal is in your attic until you see it. But several clues can help you narrow down the suspects:

• Sounds: Smaller animals like rats and mice make scurrying and tapping/gnawing sounds. Larger animals like raccoons and opossums make louder clambering noises. Also, note when animals are noisy: Squirrels are active during the day, while rats are busiest at night.

• Droppings: Rats and mice leave small, rice-shaped droppings (the rat’s version is significantly larger). Bigger droppings belong to larger critters like raccoons. As long as you’re not squeamish, an image search can help you identify what you’re seeing in your attic.

When in doubt, take photos of damage or other evidence and show them to an experienced pest control pro.

Bobcats are most active from sunset to midnight, and from sunrise to a few hours into the morning. If you see a bobcat acting strangely in hours they’re normally not active, it’s possible they’re sick. The Humane Society recommends contacting a local wildlife professional to find and trap the bobcat in this case.

While doggie doors are convenient for pet owners, they do offer a few drawbacks. For instance, they’re small enough that unwanted critters could come into the house, such as raccoons, snakes, rats, and insects.

They’re also large enough that small children can escape through them, which can be a serious concern to parents of young children.

Finally, doggie doors can make it difficult to regulate your home’s temperature because they constantly let in hot or cold outside air.

While there are plenty of DIY home remedies for pests, trapping and fumigation costs are worth the investment when dealing with a serious infestation that is hard to get rid of, like termites,  bed bugs, or mice.

DIY traps and sprays might help eliminate a few ants or the occasional mouse, but they're no match for a full-blown infestation. Call an extermination pro to locate where pests hide, how to treat the issue at the source, and how to keep it from returning.