I was curious about that too. I guess the forensic testing wasn’t viable given it was likely 3 months between collecting, autumn to winter.There has been no mention of DC traces from any other appliance or item in EP's kitchen, only the dumped dehydrator. I'm interested to know if police tested her benches, cutting boards, plates, knives and cutlery, appliances, Tupperware containers, Thermomix, blenders, Dishwasher, sink drain, etc. I wonder how thorough the searches were? If she accidentally prepared foraged mushrooms, where is the evidence?
If it was premeditated, you’d limit your tools and throw them away immediately. Bleach the bench top, sink, etc. Store the DC container in a garage or shed, in a secondary container or locked box. Iam still puzzled why the dehydrator wasn’t disposed earlier. To me, you would dispose everything months prior. The dehydrator is a sticking point for me.