mucus
Mucus.
Mucus
There are many. Syrup and glycerol would be examples.
the septum
nose hairs
Sticky traps like TomCat.
Rat traps, can catch the mouse (Sticky traps). Also The poison in the traps can kills the rats ASAP.
They are readily available, but not for all insects.
Mucus traps dirt and bacteria.
The word is daub. It means to coat or smear a surface with a sticky substance in a liberal way.
It traps bacteria and dust.