Mine doesnt have removable liner, so i use the deep utility sink in my basement, and some tide. i simply hand press/wash all the pads on the inside of the helmet until it is fully washed. Then rinse it as best i can, usually filling the helmet with water 5 or 6 times, and hand pressing the pads to get the soap out of them. then for drying i use a blower i have for my kids moon-bounce and let it wind-blast the inside of the helmet for a few hours. mmmm minty fresh after that.