[ClumsyPilot]

The rats are already mini, and have real intelligence unlike AI does. They also reproduce cheap.

Mines are cheap and numerous, and anything that deals woth them had to be cheap

[451mov]

rats take ages to train and that process is not cheap.

drones + ground penetrating radar + computer vision + machine learning is a viable option.

[cute_boi]

so, you are indirectly saying intelligent creature are cheaper than machine which uses AI ....

[ClumsyPilot]

I am directly saying it, I can buy a rat for $10