Queen sheet set 2 small stain’s

Soft microfiber sheet set by Mainstays. Light gray color. Wrinkle resistant and bleach friendly. 2 small stains shown in first 2 pics. They are by one of the corners on the fitted sheet. Top sheet never used. Come with 2 pillow cases. 3rd picture i tried to fold the sheet to show in relation to where the stains where in the corner