How horrible!! And not something anyone would ever think could happen! Thank you so much for joining the board and warning us of this possibility. I am extremely concerned when you say they are so tiny as bed bugs are also tiny and have a similar appearance to beetles. Google images of them. Additionally they spread so easily. They could have been in the distribution center where it shipped from, or on the employee' clothing who packed your order or any number of possibilities. You have my sympathies in this ordeal. I would definitely be contacting Walmart right away as they should be responsible for extermination fees. Exterminator would be next and I would ask them to document everything so you can go back to Walmart with it. Please do come back and let us know what the outcome is. What a horrible thing to happen.