first, you need to take the horse breaking in to the feed more seriously, you can kill or permanently lame your horse this way.
Second, galvanized steel trashcans with bungee cord lids are cheep, last and work.
On the bright side sooner or later the snakes will discover the fertile hunting grounds.
I would love to get metal bins, but as I've said, I just can't afford it.
Here they're $42 for a 55L bin. It will fit one bag of feed in it. I need 6 bins to fit my feed. That will cost me $252 VS the $70 I paid for the plastic. Just can't afford it.
I don't need to take my horse breaking in to the feed more seriously. It was MY FRIENDS PONY that broke the gate to get in. That pony is a very naughty little piggy sometimes, and he is no longer at my paddock. My horse is there alone. A friend accidentally left the gate to the feed open one night and my horse never went in there. I can't even entice him in there no matter now hard I try. I only said IF my horse wants to, he could. But that's a very big IF.
I do realise that he could, horses do what they feel like when they feel like doing it and things they didn't do before, they could decide to do now. This is why I'm hesitant to put down any poison.
It's middle of summer here and there's a carpet snake that lives in the garage next to the feed shed. I don't think he's doing his job :( In fact come to think of it, I've only seen one snake all Summer.
I wish I could just poison the little jerks, it would make it all easier for me to just throw it down and then dispose of any bodies I find.
I might try the peppermint and see how that works for deterring them.