A Question for you Server Gurus on redirection of an ip away from the server

I have been Bombarded with Hackers and Bots pounding the Server and when hitting Wordfence I do get an email on the IP Address and on each email keep a running list of all the IP's and every day or other day depending if I get around to it Put the new IPs into the fire wall. They are hitting and pounding the server and increasing the load of the server. What I would like to do if it is possible is to put those IPs into a redirect script or in the htacces file of each of my websites to point the IPs away from the website. and If that is possible will it cut down the load on the server?
or if anyone knows of a better way to do it please Chime in.
So what do you think?