text: the canvas on my pop up camper has some mold and mildew on it what kind of cleaner should i use?   mix a solution of one part bleach to one part water. spray on mold and mildew spots and gently rub. let sit for 15 minutes and re-apply if it dries out. rinse thoroughly. if mold stain is still there use pure bleach. bleach is the only thing that will kill the mold/mildew and if you don't kill the mold/mildew it will spread. if the canvas leaks in those spots afterwards apply "camp-dry" spray on waterproofer to reseal. it's available at your local hardware or walmart. good luck and happy camping!!!!