My kitties really love their sisal scratching post. They had finally shredded the the sisal in the area that they use the most. Rather than buy a new one, we decided to repair this one. I purchased a spool of 1/4 inch sisal from Lowe's.
Supplies:
Make sure that you purchase sisal that is intended for this purpose or that has not been treated. I recently redid this post a second time with the incorrect type and had to remove the new sisal. On close examination I noticed a very distinctive chemical odor. The cats would not use the most recent fix until I removed the new material and used sisal approved for scratching posts.
Steps:
This can be done by one person, but we found that it worked much better with two. One person applied the glue and the other attached the sisal, adjusting and tightening as we went.
I did notice it took a day or so for them to start using the repaired post. I assume that either the glue or the sisal had an odor that needed to dissipate first.