Hoppers Helping Pet Lovers Since 1999 › Forums › Introduce Yourself & Your Pets › Hoppers This topic contains 0 replies, has 1 voice, and was last updated by eekgeek3 6 years, 1 month ago. Viewing 1 post (of 1 total) Author Posts August 23 at 5:34 am #74464 eekgeek3Participant For how many days will baby mice remain in the hopper, or popcorn stage? They can sure hop. Hop hop. :confused: Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.