Lynn, do you mean what brand of iron phosphate? Whatever I can easily get at the time. I've used Sluggo, Escar-go, Gardener's Supply, whatever. I think they're all the same- active ingredient iron phosphate.
It's supposed to be earth friendly, breaking down into iron for your plants, with little effect on beneficials. I don't know about kids and pets, but really? When my kid was little enough to be goofy enough to eat dirt, I never left him outside alone. And I had a collie who would eat anything, including a whole rose bush, with thorns, and a pile of PVC pipes, so there's just no way of knowing about dogs.
Karen