My fish love to eat them, as do both of my ACFs. I went and bought 50 today, 20 for the 10 gal (there will be considerably less come morning), 5 for each for my 3 gal Betta homes (3 of them) and seven in each of the frog tanks...yes, there is one missing...he jumped and the cat munched him up. They're fun for the whole family! xD
I get mine, 10 for 1.99 or 50 for 6.99. Not a bad price, right?
Dead useful too, eat up anything that gets in the gravel and makes vacuming the tank suprisingly easy. =3 I was pleasantly suprised when I cleaned mine up last week, far less mess than normal. (My apple snail is a poop machine too oO so I was double shocked.)