Some advice I saw.
Fill your sink or a tub with warm soapy water and add the white vinegar.
Submerge your mat(s) in the water and let them soak for at least 30 minutes.
Scrub the mat(s) with a clean cloth and then rinse with clean water.
Leave them outside to dry, preferably in the sunlight for at least 3 hours.
Good weather for it luckily. Apparently the uv from Sun helps.