Please Pray For My Missing Kitty-khye

My yellow and orange Kitty Khye has disappeared I NEVER wanted to let him be outdoors (we live in town)EVER but if we didn't he would spray(even though fixed) and claw the furniture so we'd let him out and in and then he was a good kitty but I am so afraid-- he has been gone half a day now and no sign of him--if anyone has any ideas for finding him please let me know--he had a collar(was breakaway but I have hear bad stories) because I wanted people to know he wasn't a stray and turn him in to the shelter that is why he had a collar--I have looked up and down the streets calling(normally he comes running from wherever he is when you call) and he eats like every 2 hours(I know not good we just give him a bit each time)He has a cat flap in our basement and he can actually let himself in the house through a bi-fold door to the main house-- he normally is yowling around outside in the night scratching the screens when he wants in and he is fed by my husband when he gets up for work really early around 2:00am and then lays on my bed until late afternoon and then in and out but he went out last night around 8:00pm and NO sign of him so far I am just sick about it--what should I do if he doesn't come back soon--make flyers--call the shelter--what else???I am so scared he got caught under our house or something or the collar hurt him--I feel awful--
Thanks in advance for any advice prayers support
http://img.makeupalley.com/3/4/2/2/1316195.JPG http://img.makeupalley.com/3/4/2/2/1316194.JPG