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Are bats a problem in the attic?

Author

William Rodriguez

Published Jan 06, 2026

Bats are frequent visitors in both old and new houses. They are small, harmless mammals that do not cause any damage within your house.

Should I remove bats from attic?

A colony of bats in your home may reproduce, return year after year, destroy your insulation, and cover your attic in their droppings. If you notice bats around the house, professional pest control may be the best response.

What do you do if you have bats in your attic?

If you find yourself up against a massive colony of bats in your attic, you may want to contact a wildlife removal expert to help with exclusion doors and traps, as well as proper sealing and cleaning.

What are the signs of having bats in attic?

Discover where bats might be roosting in your property.

  • Bat droppings. Bat droppings look very similar to rodent droppings but are dry and will crumble to dust under very little pressure. ...
  • Emergence survey. ...
  • Bat chattering.

Do bats move around in the attic during the day?

Bats are nocturnal animals, which mean that they sleep during the day and will only come out at night. Therefore, if you happen to see a bat flying around your very early in the morning or during the night, this is a major indication that there are some bats living in your attic.

40 related questions found

Is it safe to live in a house with bats in the attic?

Is It Dangerous to Have Bats in Your Attic? Bats in themselves are pretty harmless, gentle creatures, but you still don't want them in your home. Bats can expose humans and animals to potentially life-threatening diseases, including rabies. In addition, bat droppings can also be extremely dangerous to humans and pets.

Are bats in attic common?

Attics are a cozy home for most bat species, as they prefer to live in sheltered, dry, warm places. These winged mammals also prefer dark locations because of their nocturnal nature. Attics provide better shelter than just about anywhere else, so if a bat can get in, it's likely to start roosting there.

How long can bats live in attic?

How Long Can a Bat Live In The Attic? The average lifespan on a bat is between 10 to 20 years, but survival into adulthood is mainly determined by the quantity of food and the kind of shelter that's available. If a bat manages to get food and good shelter, the animal will live long.

How do I get rid of bats in my attic naturally?

15 Tips on How to Get Rid of Bats Fast [Humanely]

  1. Fill up holes and seal cracks. In the wild, bats like to hang out in caves during the day. ...
  2. Install a bat net. ...
  3. Install a decoy bat house. ...
  4. Remove food sources from your garden. ...
  5. Implement a bat cone bat deterrent. ...
  6. Install bright lights. ...
  7. Use mothballs.

Does one bat in the house mean more?

One random bat in the house doesn't always mean anything. Most of the people that call us have had at least two or three instances of bats in the house over the last few years though. Multiple bats in your house is a very strong indication of an infestation. Most bat colonies found in houses are maternal colonies.

How long can a bat live in your house?

If there is no food or water, a bat trapped in a house will die within 24 hours. Even after it is dead, you should not touch or go near the bat. Some animals seem scarier than they are, but bats are every bit as dangerous as they seem.

Are bats bad to have around?

Simply left alone, bats are primarily harmless and highly beneficial, essential parts of the ecosystem and vital to the balance of nature around the world. Left undisturbed, each night, they eat thousands of flying insects that are agricultural pests, pollinate and spread seeds, and fertilize plants with their waste.

What smell will keep bats away?

Bats don't like the smell of mothballs, white phenol, cinnamon, or eucalyptus. Install bright lights to help deter them. Bats also don't like objects that reflect light, so you can hang strips of aluminum foil, mirrors, mylar balloons, or even old CDs.

How can you tell where bats are getting in?

First, start by examining where the majority of droppings (guano) and body oils are. These usually resemble black spots, and they give you an indication of where in your property bats have established their colony. Feces and urine will build up in piles below the roosting area.

Do bats cause damage to houses?

Structural Damage. As we noted above, bats do not chew on buildings. However, their guano and urine will accumulate over time, resulting in waste dripping through ceilings, ruining insulation, and soaking through sheet rock or particle board, eventually causing the interior of the structure to collapse.

Do bats burrow in attic insulation?

We assume bats will just be roosting from the rafters when we peek up in our attic. But the reality is bats burrow into the insulation looking for warmth in the cooler months.

When should you put up a bat house?

When is the best time to put up a bat box? Bat boxes can be installed at any time of year, but they are more likely to be used during their first summer if they are put up before the bats emerge from hibernation in the spring.

Do bats return to the same place every year?

Some bats leave for the winter, but most hibernate in their nest. In April, these same bats return to their nesting places. If the bats have a nest in your home, they will return to the same spot, year after year.

Do bats sleep in the same place every day?

Bats are creatures of habit. They roost together in the the same place year after year. And one other thing you can count on is that bats will leave guano droppings on the entrance to their roost area every night.

Where would a bat hide during the day in my house?

Bats will most likely land somewhere they can hang—behind curtains or upholstered furniture, on hanging clothes or in house plants. Carefully place a plastic tub or similar container over them. Gently work a piece of cardboard or stiff paper under the container, trapping the bat inside.

Can bats chew through walls?

However much you may have heard through various sources the fact remains that, bats can chew absolutely nothing as in they do not chew through walls, wood, wires, or any other related building materials similar to rodents and mice do.

Can bats crawl through walls?

Bats prefer dark, secluded areas where they are protected from predators and bad weather. Bats generally roost in high places, such as attics. They can enter a house through a hole as small as 5/8 inch, often near chimney flashing and under eaves. They sometimes travel through walls or pipes looking for spaces to live.

Do moth balls keep bats away?

Somewhere along the way, mothballs became associated with bat prevention. The smell of naphthalene, the active ingredient in mothballs, is disliked by the pests. However, using them to keep bats away is impractical.

Will wind chimes keep bats away?

The noise from the windchimes will not drive the bats out, nor will it spook them enough to leave. Bats do not easily or willingly leave their roost. Leaving lights on because bats are nocturnal will also do nothing. Bats can wake up during the day; they choose not to.

How do you stop bats from coming back?

The process of exclusion involves using netting or tubes at entry points, which allow the bats to drop down and take flight but which confound re-entry. The excluders are left in place for a week, so that the bats give up. After they're gone, the plugging and sealing and caulking can take place.