Meanwhile, the mouse invasion at the front is reaching critical levels.

https://sopuli.xyz/post/6482357

Meanwhile, the mouse invasion at the front is reaching critical levels. - Sopuli

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Someone needs to start a cat infestation. My garage used to be like this. The I opened a window, so that the neighborhood cats could enter.

No mice after just a couple of months.

I am not even joking, the situation in this trench seems serious and cats are brutal hunters.

Cats don't hang around anywhere near fireworks, let alone artillery barrages. Good luck keeping them there.
Just get deaf cats
This is the obvious answer.
There are many cats kept in the Ukrainian dugouts. However, it seems that mice have incredibly proliferated by feeding on the Ruscist corpses left out in the open. Cats are physically unable to consume them all at once.
No mice no birds