As extra trails are performed the handler should slowly increase the period from the moment the dog sniffs the scent and when the dog is cued to sit
. This will allow the dog to make the choice to sit on its own without verbal and physical guidance from the police dog handler. If you let the dog to stop sniffing the scent before you cue it to sit, the dog will not be trained to put together the scent with the sit response and the reward. All things to be detected must be presented in the identical method as the original training aid.