Home Hardware in Ontario has a great product. Its called Ice Melter. It does just as it says. it wourks for up to
-18. And it is safe for pets it does say on the container itself that it will not harm pets, trees, plants and grass.
Overview
Ice Melter and Traction Aid
- Home ice melter will not harm good quality, air-entrained concrete for cold weather climates
- Ice Melter is not recommended on the following surfaces; concrete that is less than 1 year old, masonry (stone or brick), precast concrete (steps or paving stones), stone or concrete surfaces that are chipped, cracked, spalled or have exposed aggregate
- For best results, apply ice melter using a push type or hand held spreader
- Ice melter is very effective, so a small amount will go a long way
- Spread evenly over snow or ice at a rate of 0.5 kg per 10 m sq. (1 lb per 100 ft sq.)
- Anytime the snowfall amounts to more than 2" plow or shovel first, then apply ice melter to melt the stubborn layer of ice or hard packed snow that remains
- Shovel off excess slush and water, and then reapply to heavy areas of ice
- Do not overspread
- Apply evenly and avoid piling
- Ice melter will not harm vegetation or pets when used as directed
- Color dyed for visibility when applying
- reduces risk of over application
- Do not pile melting snow and ice containing ice melter in one location where the accumulation will run off on grass or near trees
Hope you can find it!