Of course tightly closing the jug and putting it out of reach of dogs and kids would be too much to expect from parents.
I had a relative who drank some to get sympathy. Without going into detail, the world would have be much better off if he'd just taken a couple more swigs.
Animals lap it up off the ground, from radiator overflow or leakage. On a hot summer day you can be standing holding the leash talking to someone and discover that your pet is drinking from a pool next to the curb between two cars. And even if you are careful, and NEVER forget to recap antifreeze tightly, are you sure the parents of the neighbor you child plays with are as watchful - seeing them sentenced to jail for stupidity won't bring your son or daughter back form the grave.
Which is of no help when your dog, or wild birds, licks the stuff from a puddle in the street. California condors have died this way.