Ideas on how to collect P. americana from my school

[Entomology_and_herpetology]

So I really want some americana for my collection but I canno find them anywhere besides my school. I can't afford to buy them online right now so this is my only option. Well today I found proof of an americana population in my school in the form of a deceased adult. I wanted to collect the body but it was a crowded hallway and I was too nervous to let everyone see me pick up a dead cockroach 😕
My only idea as to how I'd actually collect them would be talking to my counselor who is aware of my strange obsession. She said she sees "waterbugs" in her office in the mornings and described what sounded just like americana and now I have no doubt. But I can't just ditch class to find roaches and I can't really stay after and look. So that's my problem. I carry a specimen jar at all times in case I come across a live specimen. I'm pretty much desperate for some americana. So does anyone have any other ideas? Like where to look? Or maybe other locations that I could find them. I live in a small town in western Kentucky if that helps any. What about other signs to look for to tell me where the main population is? They seem to be in the area near the cafeteria. My counselors office is right before the cafeteria. She actually said she'd try to catch one for me. The issue with that is I've only seen her once since she actually isn't my normal counselor who I haven't seen at all this year. I guess I'm gonna have to arrange another meeting with her specifically unless anyone has any ideas. I hvae been here for a couple of years now and never found an adult but the way that counselor talked it sounds like there is a big population here.

[Entomology_and_herpetology]

I realize it's really unlikely to get an opportunity to find them as they're nocturnal. What kind of things could I look for in my town to find them? Because that's my best bet unless I can bribe someone to let me search at night haha.

[Entomology_and_herpetology]

I realize it's really unlikely to get an opportunity to find them as they're nocturnal. What kind of things could I look for in my town to find them? Because that's my best bet unless I can bribe someone to let me search at night haha.

[stanislas]

Build a trap? 

[Longhorn1234]

Do you have any wooded areas around where you live? You can try looking in the leaf litter for tiny nymphs

[Entomology_and_herpetology]

21 hours ago, Longhorn1234 said:

Do you have any wooded areas around where you live? You can try looking in the leaf litter for tiny nymphs

I do have wooded areas but all I seem to find is parcoblatta sp. 

[Entomology_and_herpetology]

21 hours ago, Longhorn1234 said:

Do you have any wooded areas around where you live? You can try looking in the leaf litter for tiny nymphs

I do have wooded areas but all I seem to find is parcoblatta sp. 

[Marlon]

I've had some get trapped in my bathtub somehow.  I'd suggest a pit fall trap with bait hidden in a corner near the kitchen, or a funnel / bottle type trap maybe.  Maybe with a cover so once daylight comes, it will be dark inside.  My apartment building used to have them but they would only come inside and run around if it was at night just before a storm hit; otherwise I think they must have lived around or inside the walls and I seldom saw any.