Thank you both for your insight!

I am based in the Netherlands by the way, I will also look up on youtube how to make a safe CO2 setup, also will look if canisters are easy to get here.

Currently I feed my rats lab blocks and if something is left over like bread,fruit etc. I also share it between all the tubs.

The chewing toys is something I could do indeed, can I use anything for this like cardboard from let's say a toilet paper roll ?


Another question, something I noticed with the litters of mice I got recently moms can go crazy... I know water and food can be 2 causes for this, but anything else I really need to keep an eye on while they are being weaned? Can I house a litter to a different female if the mom goes crazy?

Thank you for the informations and time