Many people discard leftover cooking oil after frying, but it can be reused in several practical ways around the house. Instead of throwing it away, consider repurposing it to save money and reduce waste. For instance, used cooking oil can effectively remove sticker residue from jars and containers; simply apply it to the sticky area, let it sit for about 10 minutes, and wipe clean. Additionally, it can restore shine to wooden furniture—just dab some oil on a soft cloth and gently rub it onto the wood. Used oil can also act as a lubricant for rusty screws, nuts, and bolts, making them easier to turn. Furthermore, leather items such as belts and shoes can benefit from a light polish with a small amount of oil, helping to maintain their appearance. However, it’s important to strain out any food particles from the oil and store it properly. Avoid using oil that smells rancid or has burnt residue, and remember that these tips are intended for household applications only, not for cooking.