Bleach also works. And high concentrations of ethanol (works for humans too).
Also, just leaving the petri dish out on your lab bench to desiccate.
Significant cell death
Bleach also works. And high concentrations of ethanol (works for humans too).
Also, just leaving the petri dish out on your lab bench to desiccate.
The Finch and Pea 
YES! That’s my standard response (not the gun, the bleach).