Originally posted by mruffruff
I have had that happen, too

I tend to set the trigger so it goes off as soon as any pressure is put on the foot plate in the back. I think that sometimes I set it TOO close to the edge and a good bump on the side or top sets it off.

Do you have any stray dogs in the area? If they try to get to the food but can't reach it, they will set it off without disturbing the food.

Could be a neighbor who doesn't want you to trap could be sabatoging you. Hopefully not.

Mary
Well it's good to know it happens to others.
No stray dogs or even loose dogs in my area, hardly ever.
And all of my neighbors would love for me catch the strays as they are either kitty lovers or kitty haters. The later is sad to say but at least they support me in helping kurb the population and keeping them healthy.