I have too many bots spamming on my forum.
 

Is there any way to stop them? Thing is I have enabled human verification under registration and I am not getting more bots. but the problem is what SHOULD I do with the ones that are registered? They constantly try to post spam all the time.

Is there anyway I can have some human verifcation thing added for each post that has to be made on forums? or something else?

Please help.

Why don't you delete them and ban them?

There are way too many.

around 30 bots everyday.

I have managed to stop the bots from signing up.

Only problem is the ones that are signed up, how to stop them from posting.

Look if you have stopped the bots from signing up, then the most sure way to get rid of the ones already registered is to manually delete them.
It may take a while if there are a lot, but at least you can be sure that they won't be spamming your forums anymore, right?

Yes Randomm is right. Delete the bots manually. Since you have stopped the bots from registering so after you delete all the bots, no more will sign up. It will be worth it.