ACT gives you a 2-year Performance Guarantee (i.e. that the cloth will be just as effective on dirt two years after purchase), on the condition that you follow the care instructions and do not use the product on rough surfaces or together with chemicals. Guarantee claims are valid only if the product and its original packaging are sent to us along with a written description of the problem. We will, of course, meet valid claims by sending a corresponding replacement product. Naturally, Euronet USA backs these products with a 100% Satisfaction Guarantee. If you are not totally satisfied, just return the product ant its original packaging within 14 days for a full refund (less applicable shipping costs).