Organic oils such as vegetable oils, pine tar and molasses are an option because these substances stick to dust and dirt particles and keep them from escaping into the air. However, there are some drawbacks. For example, reapplication is frequently necessary, and these oils cause slippery roadways during rainy and icy conditions. In addition, they often emit unfavorable odors and can make areas look unclean after application.
Electrochemical alternatives draw and stick to dust particles that have positive ionic charges. This option also helps to force water out of soils and encourages packed-in, and less fly-away, dirt particles as a result. However, plants do not grow well in areas where some of these products have been applied.
Liquid mixtures comprised of enzymes are another alternative to rock salts. These mixtures prevent dust particles from getting into the surrounding air by encouraging dirt and dust compression.
Although it's a member of the rock salt family, magnesium chloride is a more resilient and environmentally-friendly option. It is as effective as calcium chloride, but not as inexpensive. However, it has less harmful effects on nearby plant life and vehicles.
