There is another product avail from CDN tire that is a better product. Airman tire repair kit $49.99
http://www.canadiantire.ca/browse/product_detail.jsp?PRODUCT%3C%3Eprd_id=84552444327 6876&FOLDER%3C%3Efolder_id=1408474396672438&bmUID= 1219723570833&deptid=1408474396672395&ctgrid=14084 74396672399&subctgrid=1408474396672438
It is the exact same thing as tire racks continental kit that is $80 US. I have read that slime uses a different type of sealant that is not as effective in the cold either + other reviews out there say that the conti style kit is easier to use.
(oh ya - ignore the reviewers comment on their website about no refills being avail - they are on the shelf near the units)