If a product hasn't moved in 60 days, mark it down and clear it. Don't hold onto slow movers hoping they'll sell. Your shelf space is valuable; use it for products that turn over.

If a whole category is declining—say, refillable mods are losing share to disposables in your area—phase them out gradually. Reallocate that budget to what's growing. Every quarter, review your sales data and adjust.

Sometimes a product is just a dud in your market, and that's fine. The goal is to keep your inventory fresh and your cash flowing.