I recently worked with a small library that hadn't done a full collection review in over a decade. Not because no one cared, but because no one had ever blocked out the time.
Here's roughly what that engagement looked like, in case you're wondering what "consulting" actually means in practice:
Week 1: data, not opinions
Before touching a single shelf, we pulled circulation data by section going back five years. It's very easy to feel like a section is well-used when it's actually three patrons checking out the same twelve titles repeatedly.
Week 2: section-by-section pass
Using simple circulation and condition thresholds (see the weeding post from a couple weeks ago), we flagged candidates for withdrawal section by section, with the director sitting in on the first two sections.
Week 3: the board conversation
This is usually the part people dread most, and it's almost always easier than expected once you can point to actual numbers instead of asking the board to trust a feeling.
The result
About 12% of the collection withdrawn, a written policy the library can apply on its own going forward, and a director who no longer dreads the word "weeding."
If your collection hasn't had a real review in a while, this is exactly the kind of project consulting is built for. See consulting options or book a call to talk through scope.