One part Dawn dishwashing liquid mixed with two parts HYDROGEN PEROXIDE. Add baking soda for scrubbing help. Use laundry brush to work into the stain. Supposed to actually take yellow armpit stains out of white shirts!
Do it yourself refills for any plug-in air freshener. Less expensive and better for your health. plugin air fresheners have something called VOC in them. VOC stands for “volatile organic compounds” and they are highly toxic.