I love my cat a lot, but recently he made my crazy with his peeing habits. It seems like he is marking some objects in the house...So I heard neutering cat will help in that case, anyone can recommend a good doctor to do so? In addition I cant really find the places he pee in, but I can smell it around, so I need to buy a blacklight to identify and clean those areas. Thank you in advance for your help/recommendations.

any veterinarian can do it - 5 minutes job, 2 small incisions, but first the tom cat has to be sedated and can only be released when comes around.

never too late for neutering - but if his hormones started to kick in than he might still be peeing around to mark his terytory. The best is to do it with tom cats before they reach maturity. With the female cats it's worth to allow her to have one litter and than spay her.