A whore is never fully trained, nor is she ever good enough sucking cock. In spite of her previous successful training there is always space for improvement. Keeping her with a gag with a dildo on the inside has the triple advantage of habituating her to having a cock deep in her mouth and throat, forcing her to practice sucking and licking at all times, and to keep her quiet, not disturbing her owner. Can anyone present a reason why not keeping her there often?