Cleaning a Tent
Avoid using detergents because they will leave a residue that won’t rinse away. This residue attracts water and will reduce the water repellency of the fabric, not to mention deteriorate the fabric of your camping tent.
Add the soap to lukewarm water and mix it up well. Wash the tent down with a clean damp cloth or sponge. And remember not to neglect the zippers if they’re dirty as grit has a tendency to wear them out over time.
Once you’ve finished washing, rinse your tent very thoroughly with a hose. Make sure to rinse off all of the soap as a sticky residue will attract dirt which will in turn abrade the fabric… defeating the whole purpose.
Since you’re already going through the motions, this is also a great time to test for leaks and water repellency.