7-10 Days. Of course, all food and drink products last for a shorter period of time if they are not stored properly. But remember, sour cream, like a lot of other dairy products, usually has a sell by date, which is simply the last date it should be sold, not consumed.
Here are the EPAâs definitions: 1  Caution: Harmful if swallowed, inhaled or absorbed through the skin. 2  Warning: May be fatal if swallowed, inhaled or absorbed through the skin. Also indicates products that can easily catch on fire. 3  Danger: Fatal if swallowed, inhaled or absorbed through the skin.
Excerpt from ERG Guide 157 [Substances - Toxic and/or Corrosive (Non-Combustible / Water-Sensitive)]: As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.