Is it safe to delete My Temporary internet files

Im using windows Xp for with Firefoxz is it safe to do?

Yes.

Yes.

Thank you

But cant something happen if I delete all those files at Once?

No.
Use CCleaner, that's the best way to do it.

No.
Use CCleaner, that's the best way to do it.

why?
Explain please

Because it cleans all kind of other crap at the same time.

Because it cleans all kind of other crap at the same time.

Thanks.

Sure thing