It would be nice if any actually made it to snails.
They have in my tank. I have @ 100 or better little ones roaming around in my tank now. I dont know exactly which one type they are yet or even if they are a mix. I get four different type of eggs on the glass. I get the sesame seed looking eggs on the glass and rock, the above picture type, the zig zag more solid type and a little clear sack with white specs in it. If I can grab some shots of them I will post.

The only snails I have "put in" my tank are nassarius, nerite and cerith.