using mac janitor with intel mac

Ok here is my question. Does it hurt to use mac janitor on a intel macbook pro or macbook? I did down load it and I have run it a couple of times. Then I did some research and found out it is only for ppc. Has anybody used this program and is there a alliterative program that can be used to run apple script maintenance programs. Also is it true that if I don't run these scripts my mac will have problems in future. Any advice will be greatly appreciated.