Because it is winter, my dad wishes me to move the rats off the lanai. I live in Fl. He won't permit them in the house, so they must go into the garage.Last yr. I lost my favorite ratty, she was my first, because she escaped, and strolled outside. I wish to prevent any escapes this yr. and plan to build an escape proof rat cage/play area in my garage. Any ideas?

Ps. I am on a budget... I wish to put a cat playground/scratchpost and stuff in their area, does anybody have any ideas of how I might secure the area so they can' t get out etc.