Bed bugs! Tell the landlord ?

My Husband and I live in a apartment and we got bed bugs a couple months ago.. my step daughters room was infested while my MIL stayed in there for like 11 months. my Mother in-law didn’t tell us it was infested till she moved out. So we threw every single thing away from the room! And in mine and my husbands room I got bed bug covers to cover the mattress and box springs in our room and my Husband bought A D-Earth powder that had a ton of good reviews for killing bed bugs and put it all over the room my MIL stayed in. And we basically quarantined the room and after a week an a half We cleaned it all up! And for a month everything was perfect. I was sleeping at peace finally.

Well now to yesterday I was sitting on the couch late at night watching a movie and I started feeling itchy on my arm. And as I look on my arm it looked like bed bug bits. So I decided to look Super closely to the couch with a flash light.. and I found it! A baby bed bug. That means there are more than one. I was freakn devastated.. I thought we had gotten rid of this problem! These couches were brand new too. I want to tell the landlords but my Husband doesn’t. He just says stuff like and we’re are we going to go when they need us out for while so the pest control can do there job?. We don’t have all the money in the world to stay in a hotel for a while.

Should I tell the landlord still? Isn’t it there job to take care of stuff like this? And i feel like no matter how hard me and my Husband try to get rid of them ourselves they just leave to the next apartment then they come back when we think they are gone. I don’t want to live like this. I’m basically in fear of these things. I can’t even sleep. Please give me some advice i would appreciate it so much. I pray to god he takes these things away in Jesus name 😞😞😞😞😞😞😞😞