I'm wondering if I should be concerned about the amount of snails that are on my patio. Lately we've had a lot, they're really small, like the size of a pea. I've noticed a bunch of dead dried tiny black frogs lately too and I remember some time back that certain snails are poisonous. I'm not sure what's killing the frogs because we don't spray. The reason I'm worried is I have a 22 month old son and we go out back a lot with bare feet. He's had a rash on his belly for about 4 weeks now and I just got to thinking that maybe it could be related to the snails? Any thoughts? Thanks so much!