Question about feeding jumper

[megschristina]

I was told sometimes flies contain a neurotoxin that could kill a spider. Does this risk change if the flies aren’t actually “wild caught” but are hatched in my own home? My bird diet produces flies, I feed those flies to my steatodas and parasteatoda BUT NOW IM WORRIED

 

[SalticusScenicusStar]

It depends on what type of fly it is.