Cats fighting all the time...Help!

Hi! I just found this wonderful cat site a few days ago. I have a problem with my two male neuterd cats.

My eldest cat Sammycat a black Manx and my 6 month stripped tabby Oscar fight all the time. I have to constantly break them up. Sammycat is 2 and he doesn't seem to get along with Oscar since I had him(Oscar) neutered a couple months ago.

What I need to know is do I just let them duke it out so to speak or keep breaking up the fights which are getting quite serious lately?

Suggestions anyone?? Any help would be appreciated.

thanks

I would strongly suggest you invest in a Comfort Zone Room Mister by Farnum Pet. Here is a link

Comfort Zone

It works really well to stop aggression. Another way to stop this is to provide both cats with interactive playtime, just you and them where you play one on one in another room, to help expend their energy level. You can get a large cardboard box, cut the flaps off, make some holes in it off the floor level big enough for the cats to jump in and out of and throw a couple of ping pong balls inside. Their own ball bin, cats love it!