Nope you will have cold nights..at least the wasps will think they are too cold to fly...
Um th eglue..yeah do not spray it on your koi....just on the nest and occupants..it is glue.
if one or two fall in the pond when you do it (AT NIGHT or early morning before light would be coolest) the koi are not going to be real keen on going after it...you do have a net?
Ok maybe i better draw a picture.....