i finally got my asf rats all set up l had 4-1.4 groups and life was good the sankes will finally eat good after two escapes and fears of more i now have only found 1.3 and they are all mixed up
i built a 6 bin rack with 6 1/2 tall bins and drilled a hole in the sides to install water bottles
i put my two hooded rats in the top bins they havent even chewed a little but they are alone
the asf's - one day i forgot to put one watter bottle back after feeding and paid for it two hours later there they were running around (outside their cage) like a kid on sugar coatd sugar puffs (their best day ever) entirely my fault i only managed to get three back and split them between the other cages this morning i woke up and seen one running around on the rack quickly grabed it and put it in a bin when i went to put my boots on there was another one i thought great i got em all NOT!! when i got home i found another one running around on the rack upon inspection i found they chewed the top edge of the bin enough to escape i rounded up all of them and put them in a new tall bin

now to my question

should i - scrap the rack and go back to tanks ,get heavier bins(like bus boxes i found at sams), reduce my male to female ratio (less rats less chewing?), or get taller bins (my current plan of action)