Just wondering if you are providing some cracked oysters shells as calcium supplement free-choice?? It is a good thing to provide, even if you were just using Layer feed. I use Alflock only, with Oyster shells free-choice, because I have some layers, and some Geriatric retired non-layers.
Padlocks are good when predator concerns include the 2 legged type. It is simple deterrent. If so, then use padlock. During questionable weather, you can use a plastic bag, and poke the shackle right thru the plastic, as you place on the hasp.
If no 2 legged concerns, then a snap carabiner should be sufficient. A large one is easy to see if it is there, and easy to open. Pix is for idea, these are available everywhere.
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