About Us USA Total Security is your local locksmith in Monrovia, CA. Our security technicians have years of lock and key experience with any lockout problem. Please remember that all our locksmiths in Monrovia, California are licensed bonded and insured both in Monrovia and the California area. Call USA Total Security for Monrovia Auto Locksmith solutions for transmission keys and locks. Our Monrovia Emergency Locksmith service line is here for all residents of Monrovia 24/7.