So I think I'm going to start breeding mice... I have 4 snakes which all like to be picky eaters at times.. Don't know why but they just won't eat F/T sometimes... I would have loved to do rats but the gf won't allow that, lol.... So I went price shopping today to see what it would cost me to built a rack. Now my question is could you give the mice too much room? All my measurements are rounded but I found litter pans that are 16x12x4 for $4.98 18x15x5 for $7.48 or mixing tubs 27x19x6 for $5.91... The litter pans are more of a square shape where as the mixing tubs curve a little then flatten at the bottom.... I realize that with the small litter pans it will require a lil less wood to make the rack but for 1.00 more you get way more space... I guess just looking to hear some comments or recommendations....