What's that? Do you mean Heteropoda maxima?Isreal, Maxima.....
Only a pede the size of an otostigmus pedeling could go out of the vent holes and that would have to happen if you put 10 cm of soil to even reach it.
Plus the cable holes do close.
i consider them to be useless for pedes. not to mention they are not shaped properly for them either. BUT then again I do try to put them as close as to how i found them as possible. Like under a rock lolMaybe your cage has a flaw? I got 8 and i consider them the safest cages.
And seriously vent holes are like 1mm wide from inner side. Maybe you have a few broken?