That's enough to get the water flowing out of the snail, which dissolves more of the salt and keeps the concentration high enough to "melt" the snail. (http://scienceblogs.com/ethicsandscience/2009/05/how_does_salt_melt_snails.php)

Ice melt supplies - the cope company salt - lancaster, pa 17601.(http://www.copecompany.com/ice_melt/ice_melt_products.html)

Morton® safe-t-plus® ecosafe ice melt is safer for pets, plants and concrete than pure salt and melts snow and ice at 5° f. morton® safe-t-plus® ecosafe ice (http://www.mortonsalt.com/products/road_sidewalk/eco_safe.html)

How can you pick up an ice cube with a string? watch this video segment adapted from zoom to see how salt can help.(http://www.teachersdomain.org/resource/phy03.sci.phys.matter.zsalt/)

• If you add salt to ice, some of the ice will melt. you can suppose that the salt pulls some water away from its crystal form in ice. (http://www.highlightskids.com/science/sciencequestions/h1sciqsaltmelt.asp)
• Snails question: why do snails melt when you pour salt on them? since snails contain a lot of water, when they are exposed to salt the water inside them (http://www.blurtit.com/q848821.html)
• The graph [below] shows that salt can melt five times as much ice at 30o f as the graph on the left shows that salt melts more ice per pound at higher (http://www.usroads.com/journals/p/rmj/9712/rm971202.htm)

Magic salt is safer to use on concrete, is less corrosive, may not harm curbside grassed areas or plants, and continues to melt ice to below -35f° if used (http://www.magicsalt.info/magic%20salt.htm)