For parents, especially of daughters, more important than all of what you posted here, is to indoctrinate them to never drink, eat or smoke anything at social events, to carry their own supplies from their own homes and to keep their supplies under their own direct eyesight at all times, because this is how bichiz get raped, usually with them never even suspecting that foul play ever happened, because not all of these substances are anesthetics.
At times they are actually stimulants and at times a combination of both (speedball) and these are the hardest to suspect.
This is what you should spread, but then spreading this information carries a second order risk of spreading the methods.
Then again, I believe these methods became so common among predators, that there is very little to risk by spreading this information.