Static In Fur

My 4 year old cats are are long haired (persians) and while grooming I can see that they have a lot of static in their coats. I use a metal comb or a sticker brush. Please tell me if there is a solution. It doesn't seem to bother them though.

OKay this might song crazy
   
but i have you tryed rubbing there fur with a fabric sofener sheet. it will help take the static away. just like t does with your cloths.
   
i hope this helps a little bit but other then that i have no clue.

The metal in the grooming tools could be causing the static problem.
   
The dryer sheets do work to prevent static but they also contain a lot of chemicals, some of which could be harmful to a cat who licks his fur. There are liquid cat fur detangler products on the market that would probably also cut down on the static problem. But if the cat's not bothered by it I would be inclined not to do anything as it is harmless.