Made in KoreaIt depends on how often your dogs uses the pad and how often you clean it. 2. Don't tear NUGI-PAD out. Just use it as it is. 3. Don't use strong detergent when you wash the NUGI-PAD. Ignore a little bit of pee smell, it attracts your dog to come to use NUGI-PLUS. 4. Keep out of the heat.