Do these work?

The only con I can see is that you would only get 10 chicks at maximum!

 

Being that its that small it has no thermal mass. It will probably need to be in a closet where the temp don't fluctuate.

 

really small, the babies will think they're in jail when they hatched.

 

I just ordered one of these, except I bought the advance with the egg turner. I am not looking for big hatches, I live in the city and don't want but a few chicks here & there from time to time.

Check out this thread here on BYC https://www.backyardchickens.com/forum/viewtopic.php?id=211459 ..Hope this help's to answer a few questions.