You don't need to keep any feeders alive, so chirping is a non-issue. Pop the box/ bag right in the freezer as soon as they get home. Thaw as needed.
Also, don't feed Formica during the founding stage, only after she has workers.
Wait I thought founding stage refered to any point in colony development while they are below ~10-20 workers, ok, so, aside from me using wrong terminology, what I meant is: "is 10 D.hydei every day or two enough for a small colony?".