Bats are Beneficial

by Stephanie Suesan Smith on September 28, 2010

When most people think of bats, they think of vampires.  Even though it is true that bats eat a lot of insects, and that the few species feeding on the blood of mammals do not live in North America, bats are often illegally killed or driven from their roost.

Bats eat up to one half or more of their body weight in insects a night.  Most roosts support over 75 bats.  That adds up to a lot of insects every night.  Almost all those insects are ones that we consider harmful.

Bat’s excrement, or guano, is considered a premium fertilizer and sells for a lot of money.  It was used to make gunpowder in the past.  Wars were literally fought over supplies of guano.

Bats need a place to roost and raise their young in the summer and a place to hibernate in the winter.  They usually do this in big groups, making them vulnerable to malicious actions by humans.  Many bats are killed each year in this way.

An even more frightening threat is white nose syndrome.  This fungal infection spreads among hibernating bats and kills them.    The bats that have been necropsied seem to have died of starvation.  The fungus makes them wake up every 2-3 days instead of 10-20 days and the bats exhaust their fat reserves and die.

You can help the bats and benefit yourself.  An easily built bat box can be mounted on a pole to provide bats a roost in your yard.  These bat houses can hold 50 to 75 bats or more.

Trio of home built bat boxes

Trio of home built bat boxes

If you are not up to building a bat house, you can purchase a nice one.  In either case, you should put one up.  Then you can harvest both their insect killing power and the fertilizer the bat produces.  Fewer mosquitoes and bigger vegetables can be yours in return for hosting a colony of bats.

 Gardenbookfrontcoverthumbnail For more help gardening, buy my book, Preparing A Vegetable Garden From The Ground Up
Available in print or ebook from or other retailers, this book walks you from choosing the site of your garden all the way through what to do after the harvest. Buy a copy for yourself or a friend today! 

{ 5 comments… read them below or add one }

dre25cole September 29, 2010 at 3:18 am

hi didn’t know that Bats are beneficial.. thanks for sharing 🙂


Patricia September 29, 2010 at 10:41 pm

Very informative post Stephanie. When I lived and worked in the UK there were bats flying around at the farm I lived on for awhile. Can’t say I ever wanted them to fly into my bedroom but I remember one day when one flew into someone else’s room! Don’t know who was more scared, the bat or the person whose room it was in lol
Patricia Perth Australia
Patricia recently posted..Growing Lavenders-Your Favourite Gardening ToolMy Profile


Online Poker October 8, 2010 at 4:08 am

Everything in this world has its own existing purpose. We humans have one and so they too. Bats are great and they deserve respect.
Online Poker recently posted..Home PageMy Profile


Reece June 29, 2011 at 8:47 pm

“Bats eat up to one half or more of their body weight in insects a night.” That’s incredible! Very efficient little guys. I’ve never heard of building bat boxes before. That’s a cool idea.
Reece recently posted..Victor M240 Electronic Rat Trap ReviewMy Profile


Stephanie Suesan Smith June 30, 2011 at 6:39 am

Bats are intelligent, interesting creatures and bat boxes give them a safe place to sleep during the day. Here is a more conventional installation for a bat box. My Mom wanted one so I built it and my Dad and I put it up for her.


Leave a Comment

CommentLuv badge

This blog uses premium CommentLuv which allows you to put your keywords with your name if you have had 0 approved comments. Use your real name and then @ your keywords (maximum of 3)

{ 1 trackback }

Previous post:

Next post: