We have had a bobcat come through two times in the last four days. On the first visit on Tuesday, my coop mounted game camera photographed him at 10:30am, and two mallard ducks did not come home that night. On the second visit on Friday, my wife and I were out for the evening, so everyone had been put away for the night early, and he was photographed coming through at 7:30pm.

Are there effective chemical type deterrants to keep bobcats away? If I try and trap him, what bait should I use in the cage trap? Since I have not seen him around when I am around, I doubt I would have an opportunity to dispatch him with my Remington.
My mallards free range all day on the pond and all around the yard, and then the chickens and guineas join them in the yard for the evenings when I am home from work. Then everyone comes into the covered pen and coop for the night.

I don't want to keep them all in all the time, but I don't want to be offering the cat free meals twice a week. I am also concerned about my two outdoor cats and my two smaller dogs (schipperkes). My ultimate solution is fencing (heavy gauge field fence with three strands of electric on top, middle and bottom) and a couple of large dogs, but I would have to fence in the pond (or the ducks won't have access to it and be protected at the same time), and this involves almost 2,000 feet of fence, so it will get done, hopefully this summer, but its not going to happen overnight!

Any short term suggestions would be welcome.
Are there effective chemical type deterrants to keep bobcats away? If I try and trap him, what bait should I use in the cage trap? Since I have not seen him around when I am around, I doubt I would have an opportunity to dispatch him with my Remington.
My mallards free range all day on the pond and all around the yard, and then the chickens and guineas join them in the yard for the evenings when I am home from work. Then everyone comes into the covered pen and coop for the night.
I don't want to keep them all in all the time, but I don't want to be offering the cat free meals twice a week. I am also concerned about my two outdoor cats and my two smaller dogs (schipperkes). My ultimate solution is fencing (heavy gauge field fence with three strands of electric on top, middle and bottom) and a couple of large dogs, but I would have to fence in the pond (or the ducks won't have access to it and be protected at the same time), and this involves almost 2,000 feet of fence, so it will get done, hopefully this summer, but its not going to happen overnight!
Any short term suggestions would be welcome.