Suzuki, first off, welcome to Predator Masters. I can’t disagree with anything that has been mentioned by other members above. You have taken on a very challenging task in attempting to call daytime coyotes into shotgun range, during the day in the northeast. On a small property. I hope it works out for you, but iff you have already attempted it, you may have educated them to your presence which really diminishes your chances going forward.
You mentioned that you get trailcam pics. How often, and at what time of day? You mentioned that food sources have been depleted (eradicated) so I’m wondering if they’re resident coyotes or transients just passing through. Without knowing more aboutnyour property, it’s hard to know if your blind is setup with wind direction in mind of where the coyotes may come from? Do you have a good view of the downwind? Are you hunting woods or more open terrain? Where is your caller placed in relation to your shooting position? If you stick with this long enough, you’ll realize that setup is key to killing these jokers! Apps like OnX Hunt or even Google Earth are worth their weight in gold for seeing terrain features. If they can get downwind of your stand before you can get a visual of them, you’re screwed.
I’m in NY and can’t call this time of year, but I have a pretty good understanding of coyote behaviors at different times of the year. You’re dealing with denning, pup rearing coyotes right now for the most part. That’s not to say they’re all denning, just the breeding pairs. They don’t stand for other coyotes in their area so coyote vocals can absolutely work if you are in tight to them. They always have to eat, so prey distress is always on the table. These guys above gave you great information, so I’m not going to go into detail on what to play, or how long to play it. Just remember that what didn’t work today can work tomorrow. Nothing is 100%, ever. The best advice I can give you… Knock on doors and gain access to more spots to hunt. Don’t over hunt the spots you do have. Play the wind.
Good luck buddy!