During a long-term outbreak, repeated defoliation can result in host death. Extensive defoliation of forested areas is unsightly and costly. Heavily damaged park and forest lands are not attractive to tourism. Industry that depends on aspen for raw material and firewood also may find supplies reduced. Gypsy moth defoliation can alter wildlife habitats.
Defoliation reduces both hiding cover and forage for many wildlife species.
Areas declared by regulatory agencies to be infested with gypsy moth are subject to quarantines that could be both costly and inconvenient.