Thank you for your report! There are more than 10 species in North American commerce and only one has been documented in Oregon, so we are interested in getting specimens to try and keep track of species present. If you are interested and able to take a specimen in the future (collect in a water-tight container with isopropyl alcohol) I can tell you where to send it in to the Oregon Dept. of Agriculture.
Eliminating worms entirely may not be feasible, but there are some things you can try. Worms can't survive soils that are heated to 104 degrees F or higher, so composting soils can kill them, or tarping soil in direct sunlight. Pouring dilute mustard Mix 1 gallon of water with 1/3 cup of ground yellow mustard seed and pouring slowly into the soil will cause worms to rise to the surface, but isn't an effective treatment as you're not going to catch all of them or remove cocoons in this way. The resources for these tips are at https://ecommons.cornell.edu/handle/1813/103692 and https://seagrant.oregonstate.edu/sites/seagrant.oregonstate.edu/files/jumping_worm_outreach_material.pdf. Thank you for sharing your report, this helps us understand the distribution and spread of invasive species!- Lindsey

Lindsey Wise
July 29, 2021, 9:47 a.m.