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Backlink Audit returns 50,000 backlinks with toxicity scores. Most teams export them, panic, and disavow half the list — including links that were helping them. This is the workflow specialists use to actually clean a backlink profile.
Who this is forOwners or SEOs whose ranking growth has stalled and suspect backlink quality is part of the issue. Or sites that took a Google penalty hit in the last 12 months. Or established sites with 5+ years of historical link-building that haven't been audited.
What you'll need
Step 1
Backlink Audit → Overview. Note: Overall Toxicity Score, total backlinks, referring domains, new vs lost links last 30 days.
Open Backlink Audit (left rail under Link Building). Wait for the audit to complete — first run takes 24-48 hours.
Overview tab shows: Overall Toxicity Score (0-100, lower is better), total backlinks, total referring domains, and 30-day deltas for new + lost links.
Overall Toxicity Score 0-30: clean profile, focus on growth. 30-50: medium risk, audit but probably no disavow needed. 50-70: high risk, disavow campaign warranted. 70+: severe, immediate disavow + possible reconsideration request.
Don't trust the headline number alone — drill into the toxicity distribution. A profile with 95% clean links + 5% toxic might score 40 average; the right response is disavowing the 5%, not panicking about the 40.
Step 2
Backlink Audit → Audit tab → group by Referring Domain. Disavowing a domain is almost always better than disavowing individual URLs.
In the Audit tab, switch the view to group by Referring Domain (not Backlinks).
Reasoning: if one URL on a spam domain links to you, the rest of that domain almost certainly does too — over time. Disavow the whole domain instead of playing whack-a-mole.
Sort by Toxicity Score descending. Filter to: Toxicity > 60, AS < 20, 'Suspicious' tag present.
For each high-toxicity domain, do a 30-second manual review: open the domain in a new tab. If it's clearly spam (PBN, link farm, scraper site, irrelevant industry), mark for disavow. If it's a real but low-quality site, mark for outreach first.
Build two lists: 'Disavow' (50-200 domains) and 'Outreach for removal' (50-100 domains).
Step 3
For real-but-low-quality domains, email the site owner asking for link removal. Wait 4-6 weeks before disavowing.
For the 'Outreach for removal' list, use Backlink Audit's Remove tab — SEMrush surfaces contact info when available.
Send a polite removal request: identify the linking page, identify the link to your site, ask for removal, give a deadline (4-6 weeks).
Track responses in the Remove tab. About 20-30% will respond and remove. About 50-60% will ignore you. About 10-20% will respond and refuse.
Why outreach first: Google prefers removal over disavow. A disavowed link still 'exists'; a removed link is gone. Removed > Disavowed > Existing.
After 4-6 weeks, move any non-removed links to the Disavow list.
Step 4
Backlink Audit → Disavow tab → add domains. Export as .txt formatted for Google Search Console upload.
In the Audit tab, select each toxic domain (filtered list from step 2). Click 'Move to Disavow.'
Open the Disavow tab. Review the full list one more time. SEMrush formats the file correctly: 'domain:spamdomain.com' entries (not individual URLs unless you have a specific reason).
Export as .txt. Filename can be anything; content is what Google reads.
Cross-reference: are any of your good outreach targets in this file? Are any current valuable backlinks accidentally included? One last review prevents disasters.
Save a dated backup: 'disavow-2026-05-26.txt.' If something goes wrong, you can restore the prior state.
Step 5
GSC → Disavow links tool → select property → upload .txt file. Google notes this is a "last resort" for a reason.
Open Google Search Console disavow tool (search.google.com/search-console/disavow-links).
Select the property matching your audited domain.
Upload the .txt file. Google warns you this is advanced — heed it. The disavow file replaces any previously uploaded file (not additive).
Confirm. Google takes 4-12 weeks to fully process disavow signals across their crawl.
Track rankings in Position Tracking before and after. Most legitimate disavows produce no visible ranking change (because the links weren't hurting much). Real lifts happen 8-16 weeks post-disavow IF the toxic profile was a real algorithmic drag.
Step 6
Backlink Audit → Lost & Found tab. Lost backlinks are reclamation gold — broken pages or removed links you might restore.
Backlink Audit → Lost & Found tab. Filter to 'Lost' backlinks, last 90 days.
Each lost link: was it removed deliberately, or did the page break/move? SEMrush flags 'Broken' for cases where the linking page is now 404.
For broken-link reclamation: contact the site owner, point out the broken link, suggest your URL as a replacement. Conversion rate: ~15-30%.
For removed-link reclamation: less likely to succeed, but worth attempting on high-AS domains. Ask politely why it was removed; sometimes it was accidental.
Also mine the 'Found' tab for new high-quality links that came in without your knowledge — these are opportunities to nurture (thank-you email, social share, future PR pitch).
Step 7
Schedule monthly Backlink Audit re-runs. Weekly alerts on new toxic links. Quarterly disavow file refresh.
Backlink Audit → Settings → Schedule. Set to monthly re-runs (weekly is overkill for most sites).
Enable alerts: New backlinks with Toxicity > 70 trigger immediate email. Velocity spikes (50+ new links in 24 hours) trigger immediate email — could be a negative-SEO attack.
Quarterly: re-export your disavow file. Have you accumulated new toxic domains? Have any disavowed domains been cleaned up (and should be re-evaluated)?
Annual: full backlink profile audit alongside competitor benchmarking. Are competitors earning links you're not? Is your link velocity competitive?
Common mistakes
Disavowing too aggressively
What goes wrong: You disavow every link with Toxicity > 40. Three months later, rankings drop — turns out 100 of those links were borderline-but-helpful (low-quality but topically relevant). Recovery takes 6-12 months. ~$5,000-20,000 in lost organic revenue.
How to avoid: Disavow only Toxicity > 60 AND AS < 20 AND clearly spam (PBN, link farm, scraper, irrelevant). Borderline cases get outreach, not disavow. Conservative disavow > aggressive disavow.
Disavowing individual URLs instead of domains
What goes wrong: You disavow specific URLs from a spam domain. The next week, the domain adds 50 new spam URLs linking to you. You're playing whack-a-mole indefinitely.
How to avoid: Use 'domain:' format in disavow file. Disavow the whole domain, not individual URLs. Only use URL-level disavow when a specific URL is the only bad one on an otherwise-clean domain.
Not outreaching for removal before disavowing
What goes wrong: You disavow 200 links. Google sees those links still 'exist' (just demoted). Outreach + removal would have removed them entirely (stronger signal). Disavow is a weaker remediation than removal.
How to avoid: Always 4-6 weeks of outreach first. Only disavow what couldn't be removed. Google prefers removal > disavow.
Uploading a partial disavow file
What goes wrong: You uploaded a disavow file last year with 300 domains. This year you upload a new file with 50 new domains. Google now thinks ONLY the 50 are disavowed — the prior 300 are un-disavowed. Spam links that took a year to suppress are back.
How to avoid: Always download the current disavow file from GSC before uploading a new one. Append new domains to the existing file. Upload the combined file. Disavow is replace, not append.
Treating Toxicity Score as gospel
What goes wrong: You disavow every link SEMrush flagged. Some of those links were from real industry sites with low AS but high topical relevance. Their algorithm signal was helping you. Ranking drops post-disavow.
How to avoid: SEMrush Toxicity is a heuristic. Always manually review the top 10-20% of toxic domains before disavowing. If a domain looks like a real site (real content, real authors, real traffic), don't disavow even if Toxicity is high.
Not monitoring for negative SEO attacks
What goes wrong: A competitor or extortionist points 5,000 spam links at you in 48 hours. You don't notice for 60 days. By then, the velocity pattern has triggered an algorithmic suppression. Recovery takes 3-6 months.
How to avoid: Enable velocity alerts (50+ new links in 24 hours). Enable Toxicity > 70 alerts. Review weekly. Quick disavow + GSC reconsideration is the response.
Recap
Done — what's next
How to set up a SEMrush project the right way
Read the next tutorial
Hand it off
A backlink audit done once is a project. Ongoing link monitoring, outreach campaigns, disavow maintenance, and link-building are a job. EverestX SEO specialists handle full link health — one-time clean usually $500-1,200, ongoing maintenance $400-800/mo at $14-16/hr.
See specialist rates
Only if your toxic backlinks are actually hurting you. If your Overall Toxicity Score is below 30, disavowing usually has zero or negative effect. If above 60, disavowing the worst can lift rankings 8-16 weeks later. Below 60: be very conservative.
SEMrush has more aggressive toxicity scoring and a built-in disavow workflow. Ahrefs has a larger backlink index and better link freshness but less guidance on what to do with toxic links. Use SEMrush for disavow workflow; use Ahrefs for backlink discovery and competitor link gap analysis.
4-12 weeks for full processing. The file is registered immediately, but Google's recrawl + algorithm signal updates take time. Don't make conclusions about disavow impact for at least 8 weeks.
A competitor or bad actor points thousands of low-quality links at your site, trying to trigger an algorithmic suppression. Spot it via velocity alerts: 50+ new links in 24 hours from low-AS spam domains. Response: rapid disavow + GSC reconsideration if rankings dropped.
No. SEMrush's Toxicity Score is a strong heuristic but not perfect. Always manually review the top 20% of toxic domains. Some 'toxic' links are from real industry sites helping you. Conservative disavow protects what's working.
Yes — upload an updated disavow file removing the previously-disavowed domains. Google will start re-counting those links over the next 4-12 weeks. Disavow is reversible, just slow.
SEMrush
A SEMrush Project is the container that pipes data into Site Audit, Position Tracking, On-Page SEO, Listing Management, and Social Tracker. Configure it wrong on day one and every downstream module produces noise for months. This is the right setup.
SEMrush
Most teams 'do competitor research' by reading competitor blogs. The real workflow surfaces the keywords competitors rank for, the backlinks they earned, and the content gaps you can win — in about 4 hours. Here's the right sequence.
Ahrefs
Every site has dead backlinks pointing at 404'd pages. Reclaiming them is the highest ROI link work in SEO — the links already exist; you just have to redirect or replace the destination.
SEMrush
You're paying $139-$500/mo for SEMrush. The question isn't whether the tool is worth it — it's whether you have the time and skill to actually use what you're paying for. This is the honest framework.