I've been reading about this roach backpack for ~25 years - is this approach (connecting to antennae) a dead end?
A version is commercially available as a type of learning toy. https://backyardbrains.com/products/roboroachBackpack
A version is commercially available as a type of learning toy. https://backyardbrains.com/products/roboroachBackpack
I think this application would only work if they were released as a swarm, using basic triangulation of the mesh network to get them to spread out throughout the rubble, exploiting their natural ability to crawl all over the place in great numbers.