BiG WaNkLeR

My car has been terribly squeaking lately when I got over a bump and have got many garages to check it out. First I thought it was the struts or springs but the last garage told me it was the bushings in the sway bars. Has anyone had this happen to their cars? Should I just get new rubber or change the hold bar. I think it's only in the back. It doesn't squeak when it's wet either but as soon as it dries up it's such a pain in the ***. AARRRGGHH

Thanks