20 ml each. 40 ml total. 2 refills (per pack based on low setting). Up to 90 days or fresh released. Infused with Essential Oil. Universal Refills: Fits/Compatible Avec: Glade AirWick, & Renuzit Scented Oil Warmers (For use in Renuzit (Model M292) Glade (Model SCJ168) and AirWick Fresheners (Model ED74)). Questions? Call 1-866-Renuzit. Made in Mexico from domestic and foreign ingredients.