I suspect a hose could wash off their coating of slime, which protects them from infections and from drying out, and a hose powerful enough to move them (they tend to hug the ground) would cause injuries. Also, the amphibians are moving across the land adjacent to the roads. Dragging a hose around could kill a lot of them. Furthermore, some of the crossing zones run for hundreds of thousands of feet of roadway, making hoses impractical. The creatures are pretty easy to spot with with a strong flashlight. They’re sluggish and easy to catch (except for some of the frogs). However, generally they only need to be caught and picked up only when cars are approaching.
Okay, let me see if I got this straight, there you are alongside the road with a flashlight and see a salamander halfway across the road and a car comes roaring up the highway; fearing for the salamander’s life you dash out in the road, swoop it up and dart back to where you were just as the wind from the car unfurls your loosened jacket.
Now what, do you set the little beast back down and let him start over, or just give him a little flip to the other side?