What is a great way to deal with Forum Spam-bots?

Beware of steps someone can take to be sure that your current new forum members tend to be human apart from having them write out a small essay in regards to the subject along with checking it

One Forum I’m a compenent of has this Guest feature with which has the nuts letters along with numbers and it’s important to type along what the thing is and if it can be incorrect you can not post, but still daily you will find there’s huge number of spam-bots posting within the forums while Guests.And some of the Spam-bots are recruiting as Users and ad.Some are saying that we must have the people today answer short questions regarding the subject, but a few are saying that Spam-bots can still resolution questions in which only humans related to the subject can respond to.

How must we handle it
Thank you for ones answers.

You will invariably have spam-bots.Nowadays there is no way in order to cut these off.Search throughout the net, and you may find various defensive strategies, use They all.