Finding a great secondhand item can be exciting, but it's important to clean and sanitize it properly before using it. Secondhand tech includes items like vintage record players, usable smartphones, or SLR cameras. These can be cost-effective and good for the environment, but they may carry dirt, germs, or even small pests. While sellers might say they’ve cleaned the items, it's best to do it yourself to ensure they're safe and in good working condition. Once you bring a device home, start by unplugging and turning it off. A soft microfiber cloth is ideal for wiping surfaces, especially screens, as it won't scratch delicate materials. Avoid using harsh liquids like those containing chlorine, peroxides, solvents, or ammonia, as they can harm the device. Instead, use mild detergent and warm water, or specialized cleaning solutions from brands like Whoosh! and Tech2Clean. For screens on devices like TVs or phones, monitor wipes designed for that purpose can be used. For items with small crevices, like laptops or keyboards, shake them gently to remove loose debris. Compressed air can help clear dust from ports and vents. Devices like turntables with delicate needles may need special cleaning kits or soft-bristled brushes. For stubborn gunk, a soft cotton swab with a few drops of isopropyl alcohol can be used, though there is some debate about the safety of alcohol on certain materials. Always use gentle strokes, especially on items like earbuds, which can trap dirt in their vents. After cleaning, let the item air dry completely before turning it on. Don’t forget to clean all surfaces, including the back and sides, and accessories like cases and cables if they aren’t being recycled. Smartwatches can collect residue on the underside when worn regularly. If the band is removable, it can be washed in a gentle cycle, though buying a new band might be easier since they’re often interchangeable and available at a lower cost. Portable UV sanitizers, such as Phonesoap or Homedics, use ultraviolet light to kill bacteria and viruses. These devices became more popular during the pandemic and are mainly used for phones but can also sanitize smaller items like earbuds, smartwatches, or keys. Phones, in fact, can be 10 times dirtier than a toilet seat due to how often they're touched. Maintaining a regular cleaning schedule helps keep all electronics in good condition. For example, deep clean a laptop every 3–6 months, wipe a phone daily and do a deeper clean weekly, clean earbuds at least once a month, and dust a TV screen or monitor every two to four weeks. Following these guidelines ensures that secondhand tech stays functional, safe, and ready for use.