dont know why but these last 2 weeks our old boy is spraying up everything and i mean everything even your legs is your not paying attention....we do have 3 other cats 2 males 1 female all "done".. over a year ago they have been with us 2 years so dont think its them....what could be causing him to do this, not seen any new cats about...we are pretty rural its driving me up the wall to the point i dont want to let him inside at the moment bless him..