May 26, 2026

For millions of Canadians, the late-May transition to warmer weather signals the beginning of a cherished seasonal ritual: opening the cottage. Whether nestled in the woods of Muskoka, along the shores of Lake Huron, or deep in the Kawarthas, the family cottage is a place of retreat, a sanctuary where the frantic pace of city life is replaced by the gentle rhythms of nature. However, before the first fire can be lit or the first dock can be launched, there is a formidable hurdle to clear. A cottage that has been shuttered and unheated for six months of harsh Canadian winter does not welcome its owners with open arms. Instead, it presents a unique set of challenges, from musty, stagnant air and layers of fine dust to the inevitable evidence of wintering woodland pests. Opening the cottage is a multi-step operation, a rigorous deep clean that requires a systematic approach to ensure the space is safe, hygienic, and comfortable for the season ahead. Checking The process must begin before you even step inside, with a thorough inspection of the property’s exterior. The heavy snow, ice, and wind of a Canadian winter can cause significant structural damage that must be identified and addressed immediately. Walk around the perimeter of the cottage, checking the roof for missing shingles or damage from fallen branches. Inspect the siding, gutters, and downspouts to ensure they are secure and free of debris. Look closely at the windows and doors, checking for cracked glass, damaged screens, or gaps in the caulking that could allow water or pests to enter. Check the deck and stairs for rot or loose boards that could pose a safety hazard. This initial inspection ensures that the shell of your cottage is secure and that no major repairs are needed before you begin the interior cleanup. 1.Ventilation Once you are ready to open the door, your very first action should be to open all the windows and doors to establish airflow. A cottage that has been sealed tight for half a year will have a dense, musty smell, a combination of stagnant air, trapped humidity, and the natural off-gassing of wood and textiles. Opening the windows immediately helps to flush out this stale air, bringing in the fresh spring breeze and drying out any lingering dampness. While the cottage is airing out, conduct a slow, thorough walkthrough of the interior. Look for any signs of water leaks on the ceilings and walls, check for damp spots in the corners, and inspect the floors for any buckling or warp. This is also the time to look for signs of unwanted winter residents, such as mice or red squirrels, which are common issues in seasonal cabins. 2.Pests Addressing pest contamination is one of the most critical and high-stakes tasks of opening a cottage, and it must be handled with extreme care due to the health risks associated with rodent droppings. If you discover mouse droppings or nesting materials, do not immediately grab a broom or a vacuum cleaner. Dry sweeping or vacuuming can aerosolize dangerous virus particles, such as hantavirus, which can then be inhaled. Instead, wear rubber gloves and a high-quality mask, and thoroughly saturate the affected areas with a disinfectant spray or a solution of one part bleach to ten parts water. Let the liquid sit for ten minutes to fully wet and sanitize the material, then carefully wipe up the droppings with paper towels and place them in a sealed plastic bag for disposal. Once the droppings are removed, disinfect the entire surface again to ensure the area is safe. Deep Cleaning 1.Kitchen With the safety checks complete, the deep clean of the kitchen can begin. This is a high-use area that must be thoroughly sanitized before any food preparation takes place. If you left your refrigerator unplugged with the doors propped open over the winter—which is the correct practice to prevent mold—it will have collected a layer of dust and perhaps some dead insects. Wash the entire interior with a solution of warm water and mild dish soap, paying attention to the rubber door gaskets. If you have a stovetop and oven, check the burner wells and the interior cavity for any signs of nesting materials before turning them on. Wipe down the interior of all cabinets and drawers, and wash all plates, glasses, and cutlery before using them, as mice can easily navigate closed cabinets during the quiet winter months. 2.Bathroom The bathroom and the water system present another unique set of seasonal challenges. During the winterization process in the fall, water lines are drained, and non-toxic antifreeze is poured into toilet bowls, sink drains, and shower traps to prevent the pipes from freezing and bursting. Restoring the water system requires care. Once your water pump is primed and turned on, run every faucet, showerhead, and toilet until the water runs completely clear, flushing away the colored antifreeze and any standing water or sediment from the pipes. Check all visible plumbing connections under sinks and behind the toilet for any leaks that may have occurred due to minor freezing. Once the water is running clear, thoroughly scrub and sanitize the toilet, sink basin, and shower, using a vinegar solution to dissolve any hard water mineral deposits that have settled over the winter. 3.Living areas The living areas and bedrooms require a deep, systematic dusting and textile refresh. In many cottages, furniture is covered with old sheets or drop cloths in the fall to protect it from dust and pests. Carefully fold these covers inward to trap the dust and take them outside to be shaken out and laundered. Vacuum the upholstered furniture thoroughly, removing the cushions to reach the deep crevices where dust and cobwebs accumulate. Shaking out area rugs outdoors is a highly effective way to remove embedded grit before vacuuming them. For the bedrooms, launder any blankets, comforters, and mattress protectors that have been stored in closets or chests, as they will have absorbed the musty cottage