"I was a TSA Lead in Checked Bags for 11 years. That means I usually made the call on what to do when bad things were found.
Easy stuff that didn’t require a phone call - matches and lighters, for instance, got tossed into a container without anyone being notified. The “Love Note” (that’s what we call the piece of paper we put in your bags) says we may have removed items.
For general hazmat, like lighter fluid, we call the airline and they send a rep to come and get it."