Hello everybody.

I have 10 ball pythons and I breed my own rats.
I have bought 2 new babies (balls).
I have given them newborn rats, everything ok
Second time I try to give them pinkies and after one day they vomited.

Today an adult ball vomited also after two days.

I must mention that 2 female adult rats have suddenly died.

What should I do first?

I am scared and I believe that sth is wrong with my rats.