Fill’er Up and Seal the Heel
Don’t bother measuring out a cup, simply fill up your sock with your unscented powder of choice. A funnel might make things a little smoother and less messy. The size you’re going for is roughly the size of a peach or large lemon.
The more, the better, in our opinion. You can’t really overfill the sock unless you’ve filled the sock past the ankle.
Next, use a zip tie to seal up the powder-filled portion of the sock, leaving you with a peach-sized sock ball with a tail. Use your cutting pliers to trim off the extra plastic on the zip tie.