I think the dreaded cum fly (ejaculatus aviatus insectus) is likely not immune to most insecticides. Not that it matters: generally this short-lived creature flies only once, traveling along a ballistic trajectory from its point of gestation, and then expires in a rain of sticky droplets. A simple handi-wipe or wet-nap is usually sufficient to eliminate it from whatever surface its residue came to rest upon. RTR, obviously off his medication at the moment.

O ſiſters three, come, come, to mee, / With hands as pale as milke, / Lay them in gore, ſince you haue ſhore / With ſheeres, his threede of ſilke.

In addition, most gelatins made today are produced from pigskins, which are not subject to this consideration.

The moon also hangs as an inhospitable, cold companion in the night, a grim ball that shows many signs of craterings on its surface but not the great number we see now.