If you’re like most homeowners, you’ve probably never considered whether or not you need a crawl space inspection. Unfortunately, many homeowners don’t actually think about their crawl space needs. The thing is, without regular crawl space inspections, you don’t know what’s down there. Here are some of the creepiest things that could be in an uninspected crawl space.

1. Rodent and Bug Infestations

One of the more common problems to run into is the problem of rodent and bug infestations. Because bugs and rodents reproduce so quickly, it’s easy to fall victim to a bug infestation if even just a few get in your crawl space.

2. Snakes

Snakes are well-known to be able to fit in extremely cramped spaces, which is one of the reasons they proliferate under crawl spaces so easily. If you have even the smallest opening to your crawl space, it could become a home for snakes.

3. Wild Animal Homes

During nesting season, it’s common for wild animals to craft homes in people’s crawl spaces. Not only can this lead to wild animals tearing out insulation and ducting, but it can also invite larger predators.

4. Animal Bones

If an animal dies under your crawl space, that animal is likely to become a skeleton after some time. Not all animal skeletons spread disease, but they all look very creepy, which is a good reason to clean them out.

5. Mold

There’s no such thing as mold under your house that isn’t bad for your health. In fact, all mold under your home can harm you, as even “non-toxic” mold can cause serious allergic reactions and respiratory issues.

6. Invasive Plants

Invasive plants are bad for the environment and bad for your home’s structure. When you catch invasive plants under your home early, you’ll be more likely to avoid serious and permanent structural damage.

7. Mysterious Locked Cabinets

If you’ve never looked under your home, you really have no idea what’s down there. If you’re especially unlucky, it could be something as crazy as a locked cabinet, which can hold all manner of unlawful items.

8. Mob Cash

Mob bosses can sometimes find that a crawl space makes for the perfect place to stash money. This is unlikely for those who aren’t already involved in the mob, but it’s something that can happen nonetheless.

9. Guns and Weapons

Did a previous homeowner stash a weapon under your home? Is your home compromised by an outside fugitive? If you find a gun in your crawl space, one of these things could certainly be true.

10. People Living Under Your Home

Every so often, police report on a case of someone sneaking into an individual’s home and living there undetected, sometimes for months at a time. If you’ve cleared your crawl space, you can make sure there’s no one living in there.

11. Unexploded Artillery

If you live in an area that used to have a lot of war, especially if you live in a very old home, you might have unexploded artillery in your crawl space. This can cause serious safety concerns, especially if you’ve never looked into it.

12. Disturbing Journals

Journals are a way for people to understand more about the world, which is a very important goal. However, what if the people who owned your home were on the wrong side of history? That can be truly disturbing.

13. Ghosts

Some people who believe in the paranormal believe that ghosts tend to take up residence in crawl spaces. Because they’re rarely trafficked, crawl spaces make for a great place for a ghost to live.

14. Monsters and Ghouls

What about ghosts that are larger? According to some paranormal experts, large ghosts may move into crawl spaces, where they have more room to move around, once they’ve outgrown wherever they started.

15. Foundation Problems

Of all the concerns on this list, foundation problems may be the scariest. That’s because foundation problems can have very real and very scary repercussions. Your best bet for avoiding foundation problems and any other problems on this list is to schedule regular crawl space inspections.