Hi there - Welcome to your new home!

Ants are common indoor invaders in Oregon. They serve an important role in natural spaces, so we share space with them when we have natural spaces nearby. They send scouts looking for food that often walk in wandering lines. Scouts are found singly, and may be harmlessly passing through. When ants begin showing up in larger numbers, they might have found a food or water source indoors. 

To identify your local ants, I encourage you to submit a sample to the OSU Insect ID clinic:

https://bpp.oregonstate.edu/plant-clinic/insect-id-clinic

All the best!

Kaci Buhl