Killing insects in substrate

[CousinM]

Hey folks, I'm throwing out some dirt substrate but it's full of darkling beetles and some roach nymphs. I want to be responsible and kill them first because they're non-native. Any good tips on how to do this?

 

[goliathusdavid]

If you are truly unable to separate the nymphs and beetles, then freezing is the most humane option. That's how almost all scientific institutions, companies, and labs do it.

 

[Conor10]

Toss them in the freezer

 

[CousinM]

How long should I freeze them?

 

[goliathusdavid]

The standard at my workplaces are three days to a week (depending on species). The longer the better honestly.