What are they gonna do, arrest you and say how evil you are for possessing nonscheduled drugs for your nonexistent rats?
It's gonna take some asshole prosecutor to spew more bullshit than he already is to convict. Let's hope your chem/peptide supplier is separates business from personal since scheduled and non scheduled drugs come from the same sources.
In simple terms, it's not illegal and at the same time it's not legal.