Once bat entrances are identified, wait until September 1 to install one-way bat doors so that the bats can exit but not get back in. This successful design for a one-way door was developed and field-tested by Dr. Stephen C. Frantz, the senior research scientist for the New York State Department of Health.
One-way Bat Door Design
by Dr. Stephen C. Frantz,
senior research scientist,
New York State Department of Health.
Illustrations by Wade Henry
Return to Bats in Houses
580 Taylor Ave., Annapolis MD 21401
Call toll-free in *Maryland* at 1-877-620-8DNR (8367)
Out of State: 410-260-8DNR (8367)