If you have NO use for them, sell them as soom as you are certain they are roos.
I have a soft spot for roo and I keep them unless they are:
1) rapist, constantly on my hens aggressively
2) They are a duplicate of a better roo.
3) They are a "mutt", a barn special.
4) They are large and aggressive towards humans.
5) They do not defend their hens or support and herd them.
I have an ol' cochin roo that every one says to get rid of. He is aggressive and very large. Why I keep him is a personal matter and I tell every one to just stay away from him.
I have two polish roos. I recently sent one off to the taxidermist. A freind requested him. The other will most likely go in the next month to a sale or I will give him away.
I have several bantam roos that tend to pair up with my bantam hens. I have no problem with these guys.
I have several middle sized roos that are living their life here until they pose a problem. So far, so good.
I have a red jungle fowl, a large plymouth white rock, an beautiful creole OEG, the cochin, two New Jersey Giants (one black, one blue), The two polish, a hamburg and his hen (they are really a middle sized pair) and a golden silkie roo.
They are all a pain in the butt, but I love em.
Roos perform a task that can not be filled other wise.
A good roo will defend his hens to the death and "herd" them to safety and food.
My roos call the flock in at night and warn of danger during the day.
The only real problem are the polish roos. They are very aggressive to the hens and I will get down to one, the old man in a few weeks.
If I sold the Cochin, he would be with dumplins within the week.
We call him dumpling and he generally stays in the barn. The wife and I know him well and we have grown quite attached to the old fart. He sleeps in the silkie pile and does not harm any of my other girls. I keep him around to protect the silkies mainly.
So you see, this decision can get pretty personal.