DURHAM, N.H. (AP) — A search for tree-eating insects in over 200 vacation homes and campgrounds in the Northeast hasn't detected any spread of the bugs, which usually stow away in firewood carried out of state.

But forestry officials say that doesn't mean the danger of the Asian longhorned beetle or the Emerald Ash Borer has passed. The beetle has devastated trees in Worcester, Mass., and surrounding communities. The Emerald Ash Borer has destroyed millions of ash trees in the Midwest and mid-Atlantic region.

New Hampshire forest entomologist Kyle Lombard says the best way to ensure no insects are moved is to leave firewood at home and buy local firewood at recreational destinations.

Eighteen federal and state forestry agencies from Maine to Pennsylvania participated in the project.