> ## Documentation Index
> Fetch the complete documentation index at: https://hiremav-mintlify-ea14cb07.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Blocked Sources and Scrub Services for Lead Filtering

> Reject leads from unwanted vendors and scrub incoming leads against the Blacklist Alliance and DNC.com suppression lists before they enter a playbook.

Mav gives you two tools for keeping bad leads out of your playbooks: **Blocked Sources** and **Scrub Services**. Blocked Sources lets you permanently reject leads from specific vendors or sub-sources. Scrub Services connects Mav to external suppression databases so every incoming lead is checked against the Blacklist Alliance and DNC.com lists automatically—before it enters a playbook.

Both tools live under **Settings → Filters**.

## Blocked Sources

Use Blocked Sources to prevent a specific lead source—or a combination of source and sub-source—from submitting leads to your account. Once a source is blocked, any lead that arrives carrying that source identifier is rejected automatically.

<Steps>
  <Step title="Open Filters">
    Navigate to **Settings → Filters**.
  </Step>

  <Step title="Open Blocked Sources">
    Click **Blocked Sources**.
  </Step>

  <Step title="Enter the source details">
    Enter the **Source** name. If the source uses sub-sources, enter the **Sub-Source** value as well—leaving the sub-source blank blocks all leads from that source regardless of sub-source.
  </Step>

  <Step title="Save">
    Click **Save**. The block takes effect immediately for any new incoming leads.
  </Step>
</Steps>

<Tip>
  If a vendor uses multiple sub-sources, you can add separate blocked source entries for each one, or block the parent source entirely by leaving the sub-source field empty.
</Tip>

## Scrub Services

Scrub Services connects Mav to external suppression databases. When enabled, Mav checks every incoming lead against the selected list before it enters a playbook—leads that match a suppression record are rejected automatically.

Mav currently supports two scrubbing databases:

| Service                | What it screens for                          |
| ---------------------- | -------------------------------------------- |
| **Blacklist Alliance** | Known litigants and serial TCPA complainants |
| **DNC.com**            | Do-Not-Call registry records                 |

<Steps>
  <Step title="Open Filters">
    Navigate to **Settings → Filters**.
  </Step>

  <Step title="Open Scrub Services">
    Click **Scrub Services**.
  </Step>

  <Step title="Enable a scrubbing database">
    Toggle on **Blacklist Alliance**, **DNC.com**, or both.
  </Step>

  <Step title="Enter your API key">
    When prompted, enter the API key for each service you've enabled. You obtain these keys directly from Blacklist Alliance and DNC.com.
  </Step>

  <Step title="Save">
    Click **Save**. Mav begins scrubbing all incoming leads against the enabled databases immediately.
  </Step>
</Steps>

<Warning>
  Scrub Services requires a valid API key from each third-party provider. Make sure your API key is active and has sufficient query credits—if the key is invalid or exhausted, scrubbing will fail and leads may pass through unchecked.
</Warning>

## When to use each tool

| Scenario                                                              | Recommended tool                          |
| --------------------------------------------------------------------- | ----------------------------------------- |
| A specific vendor is sending low-quality or non-consented leads       | Blocked Sources                           |
| You want to ensure no leads on the DNC registry enter your playbooks  | Scrub Services → DNC.com                  |
| You want to screen out known TCPA litigants before engaging           | Scrub Services → Blacklist Alliance       |
| A source uses a sub-source identifier you want to target specifically | Blocked Sources with Sub-Source filled in |