Like all Citrusafe™ products, the Gas Log Cleaner utilizes the power of Citrus, nature's natural resource, in order to provide you a powerful, yet safe and simple method of cleaning your vented gas logs. And most importantly, the Citrusafe™ Gas Log Cleaner is non-toxic, biodegradable, non-flammable, non-caustic and phosphate-free. As a matter of fact, the Citrusafe™ Gas Log Cleaner is so safe and simple to use you can even clean your vented gas logs while they're burning!