Stretch the clothing across a bucket with the stain facing down.
Pour the hottest water safe for the fabric onto the stain to push the stain out of the fibers.
Apply liquid laundry detergent directly onto the antifreeze stain. Wet a clean, white rag and work the laundry detergent into the stain.
Pour the hottest water safe for the fabric onto the stain to rinse the laundry detergent.
Dilute oxygenated bleach with water as directed on the manufacturer's directions if the antifreeze stain remains on the fabric. You can also spray on a laundry pretreatment product that contains oxygenated bleach. Let the oxygenated bleach remain on the antifreeze stain for five to 10 minutes.
Fill a washing machine with the hottest water safe for the fabric. Add laundry detergent and oxygenated bleach to the washing machine.
Place the clothing in the washing machine and let the washer run through a cycle.
Remove the clothing from the washing machine and examine it for stains. If no stain remains, dry the clothing according to the clothing manufacturer's directions. If the antifreeze stain remains, repeat the process until the stain disappears.