How to Scrub a Call List Before Your Next Campaign: A Step-by-Step Guide
Here's the actual, practical process for scrubbing a call list before you dial it — from getting your file ready to reading the report you get back.
1. Get your file into a scrubbable format
Most scrubbing tools, Carrier Fence included, accept CSV or XLSX files. You don't need to reformat anything by hand — a good scrubber will detect which column holds the phone numbers automatically, whether it's labeled "Phone," "Number," or something else entirely. What matters is that each row represents one contact and the number is somewhere in the file.
2. Decide what you're scrubbing against
DNC and honeypot checks catch different things (we cover the distinction in this post). For most outbound campaigns, checking both is worth the small extra cost per number — a honeypot hit can be more costly than a DNC hit, since it often signals an active or intended complaint rather than a passive opt-out.
3. Upload and run the scrub
Once your file and checks are selected, the scrub itself is just a lookup — every number on your list gets checked against the DNC and honeypot databases, and the result comes back as a report rather than a black box. For a list of a few thousand numbers, this should take seconds to a couple of minutes, not hours.
4. Read the report properly
A useful scrub report tells you, per number:
- Whether it matched the DNC registry.
- Whether it matched known honeypot/litigator data.
- The total count of clean vs. flagged numbers, so you know your usable list size before you dial.
Don't just delete the flagged rows and move on — keep the report. If your compliance process is ever questioned, being able to show exactly what was checked, when, and what came back is far stronger than being able to say "we scrubbed it" with nothing to back it up.
5. Re-scrub before every new campaign
This is the step teams skip most often. DNC registrations don't expire, and new numbers get added to honeypot and litigator databases continuously. A list that was clean for last quarter's campaign is not guaranteed to still be clean today. Treat scrubbing as a per-campaign step, not a one-time setup task.
6. Only dial what came back clean
It sounds obvious, but the value of scrubbing is only as good as your discipline in acting on the results. Build the scrub into your workflow before the list ever reaches your dialer — not as an optional check someone can skip when they're in a hurry.
Try it on your own list
Carrier Fence handles steps 1 through 4 in one upload — automatic column detection, DNC and honeypot checking together, and a downloadable report. Create a free account and scrub your first list with the 500 coins you get on signup.