Prestone de-icer windshield washer fluid with dirt blocker is specially formulated for even the coldest winters, quickly removing light ice & frost. It won't freeze up in the washer reservoir, even at temperatures as low as -34 degrees f, helps guard against re-freeze on your windshield, & helps repel the build-up of dirt, & salt from road spray as you drive, melts 3x more ice than the leading competitor at 5 degrees f*., not available to members in tx & selected counties in az, ca & ga due to voc requirements.