Don't spill the beans so quickly, everyone needs an OW on the loose to liven things up around the holidays!Not what you asked @dopamine (you've got great answers already), but I'm throwing this out there.
Those containers rely on negative internal pressure to stay closed - that's what the button on top is for. By you putting air holes in it, you have taken away the only locking mechanism that the container had. A smaller tarantula wouldn't be able to lift the lid, but a larger one certainly could. If you don't incorporate some type of locking mechanism (even tape), I wouldn't use that in the future. Learn from my mistakes
Good to know! I've since put my 2" P. muticus in the cereal container and he /she seems to love it.5L cereal containers will do up until around 3". Goot attempt for substrate depth but will need some more area for burrows too. It should be at least 2x this width and you are good for another couple moults.
*Tells annoying relatives I have an obt on the loose*Don't spill the beans so quickly, everyone needs an OW on the loose to liven things up around the holidays!