Q: I unpacked my tent to get ready for the camping season, and found there was mold growing in the folds. How do I clean it without ruining the water-resistant properties?
A: If possible, start by contacting the tent manufacturer for specific directions. If this isn't possible, wait for a warm, sunny day and then set up your tent in a shady location. Shake or brush off dirt and any other debris that can be easily removed. Fill a bucket with warm water, add a few squirts of dishwashing liquid, and mix well. Using a sponge or a soft-bristled brush, hand wash both the inside and outside of the tent. Rinse thoroughly with a hose. Be sure to rinse off all the soap. If you fail to do that, a sticky residue will remain that attracts dirt, which in turn will abrade the fabric. Never use laundry detergent to clean the tent; no matter how much you try to rinse it off, a residue will remain that attracts water and reduces the water-repellency of the fabric.
Allow the tent to dry completely out of direct sunlight. This may take several days. Be sure to check thick- sewn seams to make sure they are no longer damp. If the weather suddenly decides not to cooperate, bring your tent inside and place it over a drying rack. If possible, put a dehumidifier in the room.