Originally Posted by
diginagain
Some slight consideration might be given to a few scenarios. Flight in clouds, standing in the rain, or being washed, perhaps?
and
Wirbelsturm
Regarding other water sources yes, but they can be a lifed item or salt water soluble ( not good for the great lakes).
Regarding dispersal missed out that the idea was they were a gel to slow down the release and dispersal.
Still neither of you (like me) ruled them out as a good passive aid .
Still a place in the world for low tech! KISS keep it simple.