I'm not sure if I understand how to put the hair on the sticky paper. The root ball goes out side the paper or inside the paper? Sorry, I don't get this one. TIA

You stick the hair on the paper with the rootball sticking out. Then fold the paper over to hold it.

Put the hair on the sticky part of the paper with the root ball in the middle of the paper - not on the sticky part. Then fold the paper over the root ball back onto the sticky part - this protects the root ball.

I guess I doesn't matter where the roots go? Thanks

I seem to recall reading that the glue contaminates the DNA on the root ball. I folded the paper in half to hold the hairs in place, making sure that the root balls were sticking out.

I also left roots hanging out but did put each sample in a zip bag with dogs name on it.
I would have worried about the sticky glue messing with the roots.

Thanks!