As an expert in home appliance safety, I can assure you that slow cookers are generally safe to use, but there are a few important considerations to keep in mind to ensure safety.

Firstly, slow cookers are designed to operate at low temperatures over extended periods of time, which reduces the risk of overheating compared to other cooking methods. However, it is still important to choose a slow cooker that has passed safety tests and certifications. Look for models that have been certified by recognized safety organizations such as UL (Underwriters Laboratories) or ETL (Electrical Testing Laboratories).

Secondly, the safety of a slow cooker also depends on the quality of the device. High-quality slow cookers are equipped with safety features such as an automatic shut-off when the temperature gets too high or if the device tips over. These features can prevent potential hazards such as fires or electrical issues.

Thirdly, it is crucial to use your slow cooker according to the manufacturer's instructions. This includes not overfilling the cooker, as this can cause food to boil over and potentially damage the heating element or create a fire hazard. Also, ensure that the lid is properly seated to maintain the correct cooking temperature and pressure inside the cooker.

Regarding leaving a slow cooker unattended, it is generally considered safe to do so, as they are designed to maintain a low and consistent temperature. However, it is not advisable to leave it unattended for an excessively long period of time, such as overnight, without proper precautions. If you must leave your slow cooker unattended, consider using a timer to turn it off after a certain number of hours.

It's also worth noting that slow cookers should not be used in areas where they are exposed to water or moisture, as this can cause electrical shorts and pose a safety risk.

In conclusion, slow cookers are safe for countertop cooking and can be left unattended for extended periods of time, provided that you use a high-quality, certified model, follow the manufacturer's instructions, and take common-sense precautions. Always be aware of your surroundings and the condition of your appliance to ensure a safe cooking experience.

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Yes. Crock-Pot? Slow Cookers are safe for countertop cooking for extended periods of time. ... "It is safe to leave your Crock-Pot? slow cooker on while you are out of the house," she states. "The slow cooker runs on very low wattage, allowing you to cook a meal over an 8-10 hour period of time.Dec 12, 2012read more >>