One of our customers mentioned that she uses Sewer's Aid to help get her wires into her channeling, so we had to get some for everyone to use! It can be a bit tight when you're trying to get the wire to proceed around those corners, and this is great to make that much easier. If you pre-open the channel with a small knitting needle and use this lubricant (it doesn't stain) then you'll be good to go.