Don't know why anyone would worry about them. They were too slow to catch a cold. Ambush killers, and bloody uncamouflaged at that. And they couldn't even get up the kirb!
In later episodes they did have a levitation device, and you could nearly see the fishing line.
You could murder the lot of them with a Robot Wars contestant, especially Chaos II. THAT would be an episode to watch.
Skinned rabbits in a mobility scooter.