The three arrangements and what each actually obliges
Under supply, the provider carries the cost, chooses products that fit the dispensers, and manages ordering. That is convenient for a site with no storage and no purchasing capacity, but it also means the product range is the provider's, and any change of dispenser has to be discussed. It suits a small tenancy more often than a large one with existing purchasing arrangements.
Under replenishment, the site keeps buying what it already buys and the cleaning task is simply refilling. This is the most common arrangement in a government or education setting, because procurement already exists and the products are standardised. The obligation on the cleaning side is to refill from the store, not to fund the store, and the proposal should make that unambiguous.
