The annual home invasion of the Asian stink bug, now in 43 states, has started, and experts on the pest that spends its summers destroying fruits and vegetables before seeking warmth to live out the winter said this year could be the worst ever.

“The great stink bug march has begun,” said Tracy Leskey, the nation’s expert on the brown marmorated stink bug for the U.S. Department of Agriculture. “We are definitely seeing them show up,” she told Secrets.