Ameda PY and pumping directly into freezer bags?

[neeter]

I have an Ameda PY and would love to pump directly into the Lansinoh freezer bags. Is there a trick to doing this without losing any milk? TIA!!

[Momof3Labs]

I've never tried it, but you'd have to use rubber bands or twist ties to tightly get the bag around the neck of the pump (you need a vacuum for proper suction). You'd have to be careful not to puncture the bag in the process, or it would defeat the whole purpose!