Why release the pup every hour?
Why not every 55 minutes or every three hours? Is it really necessary to do it on the hour?
Puppies have a 45-minute bladder capacity at three weeks of age,
75-minute capacity at eight weeks,
90-minute capacity at twelve weeks and
two-hour capacity at 18 weeks.
Releasing your puppy every hour offers you an hourly opportunity to reward your dog for using a designated toilet area. You do not have to do this precisely each hour, but it is much easier to remember to do so each hour on the hour.