Don’t worry—Clutter can come inside to pick your items up. Prepare all items so they’re ready to go. Group them together, so it’s clear what you will store. Clutter movers should know exactly what’s going into storage, without more instructions.
For apartments or office buildings, bring items down to the ground floor and group them near the building entrance. There will be an additional charge if Clutter picks items up from inside your apartment, or a higher floor.