[Beijinger]

Rats a cheaper. How did an Army K9 officer tell me? Rats are much cheaper, but nobody wants to be a rat leader...

But the way: The landmines very likely contain TNT. But this is not what the rat detects. Landmines don't smell like TNT...

[mapt]

The logistics of the rats are cheaper. But the cost basis is probably always going to be the trainers. A trainer's time is much more costly than a dog's needs.