I don't want them either but I'm not sure what we can do about it. No fence is going to keep them out. There is a farm above us and they have permission to shoot them as they are out of the area where they were supposed to be confined. My guess is that strayed or not the Game Commission isn't going to let us shoot them.
If they ate enough of those daffs they are going to get at the least a stomachache and maybe dead. Daffs are usually deer proof as they are poisonous. Tulips and crocus are deer candy. We've had an elk in the yard. I'm expecting real trouble this summer.