[Nepeta]

Hmm, does anyone think the toxic chemicals would leach into the soil/plant?

Maybe, but if you look closely at the 'soil' in some greenhouse plants, it contains tiny bits of this stuff.

If you are concerned, I would take a bag of the peanuts, and leave it out in HOT sun, which will bake off volatiles. When it stinks not so much, you will have gotten rid of the lingering monomers and other smaller molecules. The polymer is too huge to be absorbed, most likely.

[Silentgypsy]

I thought the white things in purchased garden soil was perlite or something. Never read what it contains. Must do that.

Nepeta, I’ve only taken four chemistry courses in my life. Does this mean I should stop the research? You sound like you know what you’re doing as opposed to me.