Marshall Grain on E. Lancaster is probably your best bet. They're great to deal with, too!

Stephanie

Just remember that if you are not suffering with aphids or other tasty bad bugs when you put out the ladybugs and mantis, they will immediately go elsewhere to look for food.

Calloway's Nursery sells lady bugs and mantis. Call first because once in a while they run out. Sandih is correct, you might want to await till you get some aphids before you get some or they will leave.