Your mattress is infested with dust mites: Here’s grandma’s trick to get rid of them for good. admin, December 7, 2025 That’s a very helpful and relevant topic, as dust mites are an extremely common household allergen!1 The “Grandma’s Trick” usually refers to a simple, natural, and inexpensive method focusing on extreme temperature changes or using natural deodorizers/disinfectants to create an inhospitable environment for the mites. Here is the most likely trick that has been passed down through generations for effectively managing dust mites in mattresses and bedding: 👵 Grandma’s Trick: The Freezing and Baking Method This trick uses the mites’ vulnerability to extreme temperatures (both very hot and very cold) to kill them instantly, followed by a cleaning agent to neutralize allergens. 1. ❄️ The Freezing Trick (For Smaller Items) Dust mites cannot survive freezing temperatures. While you can’t freeze the entire mattress, this works perfectly for pillows, stuffed animals, and smaller bedding items. Method: Place pillows, small cushions, or children’s plush toys into large sealed plastic bags. Put the bags in the freezer for at least 24 hours. Action: The freezing temperature instantly kills the dust mites.2 Follow-Up: After freezing, immediately wash the items according to the care label to remove the dead mites and their droppings (the primary source of the allergen). 2. ☀️ The “Baking” Trick (The Sunlight Cure) If the weather permits, direct sunlight is a powerful disinfectant.3 Method: Once or twice a year, strip the mattress and drag it (if possible) onto a deck or lawn, leaving it in direct, strong sunlight for several hours. Action: Mites thrive in humidity and darkness.4 Strong UV rays and the heat generated by the sun will dry out the mattress and kill the mites and mold. 3. 🧂 The Natural Neutralizer: Baking Soda This step is key for neutralizing odors and dealing with the mattress itself. Method: Strip the entire bed. Sprinkle the entire mattress surface liberally with baking soda (sodium bicarbonate).5 Let it sit for at least 15 minutes (ideally an hour or more). Action: Baking soda absorbs moisture, neutralizes odors, and helps loosen up mite debris. Follow-Up: Use a powerful vacuum cleaner with a HEPA filter attachment to thoroughly vacuum the entire mattress surface, ensuring all the baking soda and debris are removed. 🛏️ Daily Prevention Tips Grandma’s tricks work best when paired with preventative habits: Wash Bedding Hot: Wash all sheets, pillowcases, and duvet covers weekly in hot water (6$130^\circ\text{F}$ or 7$55^\circ\text{C}$ is needed to kill mites).8 Reduce Humidity: Use a dehumidifier in the bedroom, as mites thrive in humidity levels above 50%.9 Air Out the Bed: Resist the urge to make the bed immediately after waking up. Pull the covers back to allow moisture (perspiration) to evaporate, making the environment less hospitable for mites.10 Would you like more detailed instructions on how to effectively deep-clean your mattress with the baking soda method? Interesting