I see there is truth in all of the comments here. For me, I am still not completely certain about the whole thing. My daughter used to sleep over at our neighbors but as our relationship deteriorate I am stopping that too.

Lying is absolutely not my way of handling things. Honestly is one of the highest code I uphold. Breaking it could ruin trust. And the biggest ruin it brings is that it would teach your children that "Lying is O.k. which is NOT."

I think inviting others to your house for a sleepover is a good idea.

Ya, these days it is really hard to trust anyone completely, unless you really really know them deeply. Even women can molest young boys (case of a teacher).

Drugging is a scary thing to think about as your child may not even know what happened. Also don't forget, even if you know the parents, there might be unexpected guest like uncles, or brother's friend in the house,etc. Most people would not think it is essential to mentioned this to you when your child sleepover at their house. Anyway, it doesn't takes a night for things to happen, it is always good to be mindful even for day visits especially long ones.

I would avoid all sleeps over if possible unless absolutely pressed for, then I'll take a step at a time.