The state's battle against spongy moths stretches back nearly 50 years. The WSDA program is one of their greatest success stories, but the fight doesn’t end—if they stop trapping, it means they’ve likely taken root in our state. FOX13
It’s a warm Wednesday morning as Gary Simon gets out of his vehicle, and begins a trek towards a patch of trees."The goal is to get the pheromone as close to the center of the grid as possible," he explains, pointing to a GPS app on his cell phone.
"It takes a lot of work," explained Karla Salp, a public engagement specialist with WSDA. "We put up 20,000 traps on an average year. It can go up to 30,000 depending on what our trapping was like the previous year." "It’s really shocking," said Salp. "I’ve had the opportunity to go to place where the spongy moth has infested permanently. I’ve been to state parks—this was in July—and it looks like winter, because the entire park is defoliated of all leaves. Not only the trees, but ceiling to floor. The shrubs, everything… no leaves.
The effects can spread quickly like dominos. In addition to lost industry or dead trees, the loss of those trees can impact other species. Each trap has a special scent, a pheromone, which can extend roughly a half-mile and attract male spongy moths. They enter the cardboard folded boxes and get stuck to an interior which is covered in glue.
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