People of reddit I ask for your advice.

We have neighbors moving into the a mobile home next to ours. I knew the previous renters and at one point while giving her a ride to work she mentioned having an infestation of bed bugs. This was about 2 months ago and they moved out mayve 3 weeks ago.  She talked about it being so bad that they were in the attic. She never said anything about getting rid of them.

Should I approach the new neighbors and mention it to them before they have all thier stuff moved in? As they have 3 kids...an 8 month old, 3year old and a 7 year old...so I am worried about that.

Or should i just leave it be...because i do not know if the problem was taking care of or not?

Also if you are for me telling the neighbors what i know...how would you go about telling them...how do you fit something like that i to a conversation without sounding like I am just gossiping....thanks for any advice