Your home toilet probably doesn't require antifreeze (unless perhaps you live in Antarctica), but your aircraft lavatory's toilet does. For the special conditions encountered in flight, Aircraft Technologies, Inc. manufactures their line of Clean-Flush products. These special additives are designed for self-contained, recirculating aircraft toilets, to control odors without the usual masking with toxic chemicals. Non-corrosive, non-flammable Clean-Flush products are made to neutralize rather than mask odors. They won't spot or stain, and they're easy to use. Their non-toxic Clean-Flush antifreeze is made with propylene glycol for cold temperatures, and will protect up to minus 60 degrees Fahrenheit. These products can be used safely in all toilets. For any questions about airplane toilets, antifreeze or any of the other products we offer, speak to our highly educated SkyGeek customer service experts.