- Never store your helmet near gasoline, cleaning fluids, or paint. The fumes can react with the helmet's materials and cause the helmet to decompose.
- Never place your helmet near a quad's exhaust pipes or hot engine parts. The heat can melt or deform the shock absorbing liner, usually a form of Styrofoam, rendering it useless in an impact.
- Never hang your helmet on your handlebars. You might not be able to see it when mounting your quad and the shock absorbing liner may compress if it carries the weight of the helmet.
Source: New Hampshire ATV Club