It's actually the name https://www.tractorsupply.com/tsc/pr...g?cm_vc=-10005
Depending on the store they might have it on the floor (mine does not) but they carry it, I usually order mine (make sure they have enough) and pick it up free at the store (rat day is a truckload day between bedding and food)
As far as ASF honestly those do well on 18% but it's their nature of spawn of evil that make it difficult, bred them shortly and I hated them, I rather breed mice to start my snakes and switch them to rats after 3 meals.