I lost an extremely good Border Collie to leased land hunters... It was my fault as the owner of the K9 when she got out of the pen. I didn't realize she was out until I got home from work and then a few days later I found her remains about 300 yards behind my house. I was upset but couldn't blame the hunters... they protected the leased land they have. I would have liked them to have come to me with her, but I can't blame their actions. It's a sad situation, but a problem for all of us.

I'd say to first try to find out who owns these dogs, but it sounds as if they may have impacted your hunting this year already...