f you have applied another fabric protector prior to using protectME, we recommend waiting until the other protector has worn off, especially if using a mainstream stain guard such as Scotchgard or Guardsman. This is usually about 12 months after application. This is because these fabric protectors sit on top of the fabric and will prevent protectME from bonding properly. Unlike these protectors, protectME is formulated with nanotechnology and will get into the fabric, forming a much stronger and durable protective barrier that lasts up to 3 years.