Went to web site, read all MSDS and here is the straight dope:<br /><br />Bulk containers, All - non flamable<br /><br />Aerosol can, United States - Flamable, new formula not as flamable as before.<br /><br />Aerosol can, Canada - Extremely Flamable, no change in formula.<br /><br />Blame law suites and EPA in US, both out of control.