How long can a trainee take chastity and it’s devices? The denial and ability to for a submissive to touch themselves taken away. A control from the Mistress to allow a sub/slave under orders, to experience an ultimate form of bondage and have their rights to release taken away. Chastity teaches patience and that a submissive or bottom must learn how to correct themselves and bad behavior, otherwise allowed to run riot. It is always an interesting test for a highly sexed sub/slave to have to hold back their basic urges, have them taken away and find out whether they can handle themselves within the set rules of their Domina with obedience. However far the chastity continues is for the Mistress to decide once they feel the lesson has been taught through denial and Bondage.
When chastity is administered, the sub is bound to the Mistress/Top who holds the keys to a small amount of freedom the sub/slave is allowed, and what a great training tool it can be!
There are a lot of training devices around. One of the most familiar is the CB range but the market has now become more and more interesting with many different sophisticated ideas as to how to go about long term chastity.