Good Morning Clay, 

Thank you for contacting the U of M Extension Service. 

Please click on the following link from the U of M Extension Yard and Garden website about carpenter ants: https://extension.umn.edu/insects-infest-homes/carpenter-ants

This information states: 

Termites are very uncommon in Minnesota.

The information we provide from the U of M Extension is "research based" so you know the information is accurate. 

If the pest control person showed up without you requesting their presence, I would be highly suspect of the information. Did you receive a business card from the person or can you do some internet research on the company to see if they are reputable? 

I did a google search for photos of termite larvae: https://www.google.com/search?q=termite+larvae&oq=termite+lar&gs_lcrp=EgZjaHJvbWUqCggAEAAYsQMYgAQyCggAEAAYsQMYgAQyBggBEEUYOTIHCAIQABiABDIHCAMQABiABDIHCAQQABiABDIHCAUQABiABDIHCAYQABiABDIHCAcQABiABDIHCAgQABiABDIHCAkQABiABNIBCDMwNDNqMGo3qAIAsAIA&sourceid=chrome&ie=UTF-8    Did they look like this? 

Here is another link about native subterranean termites: https://entnemdept.ufl.edu/Creatures/urban/termites/native_subterraneans.htm   This information is from Florida. 

You might compare the above information with the information that the pest control person gave you. 

We are volunteer Extension Master Gardeners and Tree Care Advisors. We do not do home visits and are not insect experts. 

Your information indicates you live in Washington County. 

I did a brief internet search for pest control companies that serve Washington county, MN and several reputable companies showed up. You could certainly call them, or ask them for a consult at your residence. 

Good Luck!