I can't thank you all enough for all the support and suggestions. I'm trying them all!
I sat out for hours on the porch last night just talking. I know it may sound like I'm calling and yelling for him but I'm not. When I walk I don't disturb the bushs or shrubs I look under them and quietly talk to him. Whenever I had something fun for Pete I would say...PetePete real quick and he would get excited. I've been using that same fun tone as well as just quietly saying his name. Then I cry and quietly remind him that I have never called to him unless it's safe so please come to me.

I fed the outside cats the stinkiest tuna cat food that I could find. There is still plenty left on the porch and I pray he can smell it. He won't eat canned food but he always liked that tuna.

I finally had to come in for awhile and cool down. It's so unbearably hot. I got a little rest this afternoon so I can be ready to sit outside again for most of the night.

I'm going to check the links that you all have given me for any more ideas. Thank you for those and for all the ideas. I'm just torn up over this. It was so unexpected and preventable if I had done a better window check. I always check screens but I never dreamed the whole frame could come loose.

I'm not giving up and I'm still praying hard. I really miss him. I feel so helpless and alone even though there are still 11 adorable furballs here with me. It's amazing how you miss the one.