Okay, so I saw this question floating around about the average lifespan of a cockroach and, well, I got curious. I mean, those little buggers seem to pop up everywhere, right? So I decided to do a little “experiment” – more like a slightly gross observation, really.
First, I did a quick search. Turns out, there are tons of different types of cockroaches. I’m mostly dealing with the common ones, you know, the ones that scurry across the kitchen floor when you turn on the light at midnight.

I started by, uh, “collecting” a few specimens. Let’s just say it involved a rolled-up newspaper and a lot of fast reflexes. I put them in separate, clear containers with some air holes poked in the lids. I added in a little bit of damp paper towel and some crumbs – gotta keep them comfy, I guess. My goal wasn’t to start a cockroach farm, but to observe.
- Container Prep: Clear plastic containers, air holes, damp paper towel, food crumbs.
- “Collection”: Newspaper, swift movements, a bit of yelping.
Then came the waiting game. The First one only lived one month, and it feels very short, And then, I keep watching the others, some of them lives longer, and some shorter. And I record the details.
Honestly, I felt a little bad for them, even though they’re, you know, cockroaches. I made sure they had food and water. I even started naming them. Don’t judge.
The hard part? Keeping track. and some of them even escape from the container, and I was so scared.
Some died pretty quickly, maybe a few weeks. Others? They seemed to go on forever, several months at least.
After a while, I realized this wasn’t exactly a scientific study. Too many variables, my sample size was tiny, and my methods were… let’s just say “informal.”

The (Rough) Conclusion
From my very unscientific observation, it seems like these common household cockroaches can live anywhere from a few weeks to several months. It depends on a bunch of stuff: how much food they find, the temperature, maybe even just plain luck.
I won’t be continuing my cockroach research anytime soon, I think I got the general idea. It wasn’t the most glamorous experiment, but hey, it kept me entertained, and I learned something new, albeit kinda gross. It also confirmed one thing: those things are resilient!