stoppin - we've certainly had accidents with ds that we could have prevented. So I don't blame anyone but us, of course. Seems bleeding obvious to me. If you haven't got any common sense and you let your child clamber on supermarket trolleys, you are responsible if something goes wrong. If you have got common sense but just didn't notice then you'll probably be a bit more careful in future.
I had to point out the common sense bit to dh when I turned round to see ds licking rat poison. I was doing the washing up, toddler ds was on the floor but I was keeping any eye on him and turning round regularly. He had reached into a food cupboard while my back was turned. Shouldn't have been a problem beyond possibly making a darn mess emptying out all the cereal.
Only it turned out ruddy dh had found some rat poison under the fridge when we moved in and though, ooh, I know what to do with that, I'll shove it at the back of the food cupboard without telling my wife. (I'd never seen it because it was hidden by tall plastic sealed boxes containing things we don't use very often - in fact, never, but dh likes to hang onto stuff. Including rat poison, it turns out.)
No-one's fault but dh's. Fortunately ds was fine - we think he didn't actually eat any grains. But bloody hell, I had a few extra white hairs and wrinkles after that!
p.s. we've never seen any ruddy rats, or mice, I think the previous owners were as bad as dh at hanging onto stuff even if they didn't use or need it.