I think positive enforcement is good for him and relating it to someone on knows seems to work for us. (babycenter.com)
c. Linking subsidies, tax incentives: Positive enforcement of the above - mentioned targets might take the form of subsidies or tax deductions to firms whose increase in female workers (especially in senior positions) on a yearly basis exceeds a given rate. (europacifica.com)
Encourage your dog to dig in this zone by filling the area with clean sand, burying tempting toys for your dog to uncover and providing positive enforcement when it uses the area, saying «Good dig!» (dogcare.dailypuppy.com)