I unfortunately lost a chicken earlier this year after attempting to remove the bumblefoot from the bottom of her foot. It was in a tough spot though. I now have another hen with the same issue, but fortunately hers is right on the bottom of her foot. On my last chicken I tried cutting and taking out the kernel (after soaking in epsom salt), but couldn’t find anything. This time I was thinking of using Prid and seeing if I can just push it out? I’d rather not have to cut and use a scalpel again…