I will be short.

I'm playin a game. These enemy spies are blowing up my oil pumps are mines(aluminium) causing i cant do any modern military.
I produced spies and put them on resources to catch them.
I couldnt see them /attack them nothing. Thez just keewp blewing off my resources. I was scouting around never seen enemy spie.
So how do i get rid of those ****ers, they cost me losing a war.

Spies are invisible.

The only way to stop them is to bankrupt the nation that's sending them so they can't afford to pay them.

Good to know that spies aren't useless after all.

That's not true... the more military units you have sitting on the square, the less likely the spy will succeed in the mission (and you catch and kill them). However I think it might be a little buggy... the AI seems to succeed at these missions a lot more than one would expect.

leh this cant be,
it says that spies see enemy spies..

leh this cant be,
it says that spies see enemy spies..
CIV4 Manual, page 132:
"Invisible
Spy units are invisible. They cannot be seen, attacked, or otherwise interacted with."

Try again.

leh this cant be,
it says that spies see enemy spies..
Spies do not see other spies. They improve the odds of catching spies.

Spies cannot be killed unless they fail a mission. Having your own spy in the same square will increase the odds the opposing spy will fail his mission (thus be destroyed)