On July 26th 2024, I exported all “toxic” and “potentially toxic” backlinks to three of our blog posts from a well-known SEO tool. There were 129 URLs in total, which I disavowed in Google Search Console.

Disavowing the links in GSC

After disavowing, traffic (as reported by GSC) fell by 7.1%:

Traffic fell by 7.1% after disavowingTraffic fell by 7.1% after disavowing

Sidenote.

Google began rolling out a Core Update on August 15th, which is why I cut the experiment short to only 20 days. My plan was to leave it running for a full month, but I think just shy of three weeks is enough time to see results anyway.

Before disavowing, according to GSC, traffic to these posts was trending slightly upward:

After disavowing? Slightly downward:

However, Ahrefs’ organic traffic estimates tell a slightly different story. Visibility is trending slightly downward before disavowing…

… and after disavowing:

I asked Patrick Stox how he’d interpret this. Here’s what he said:

I would personally look at Ahrefs data here. Average search volume in Ahrefs will show if it impacted rankings and visibility, although our data may be slower to update than GSC. GSC can have seasonality, luck, etc. involved, so it’s not as consistent of a measure.

Patrick StoxPatrick Stox

Makes sense. In this case, it looks like disavowing had little to no impact on rankings/visibility overall. But let’s take a closer look at the data…

Test pages

The data above is for all three pages combined, so let’s take a look at what happened to each page individually.

This page was our SEO pricing guide.

For the 20-day period before the disavow, the post got 574 organic visits. This fell by 12% to 505 visits in the following 20 days (when the disavow was in place).

Traffic fell by 12% after disavowingTraffic fell by 12% after disavowing

Before disavowing, organic traffic to this post was flatlining:

GSC organic traffic trend before disavowing for our SEO pricing postGSC organic traffic trend before disavowing for our SEO pricing post

After disavowing, it’s still flatlining:

GSC organic traffic trend after disavowing for our SEO pricing postGSC organic traffic trend after disavowing for our SEO pricing post

Ahrefs data tells a slightly different story…

Before disavowing, estimated organic traffic was trending slightly downward:

Ahrefs organic traffic trend before disavowing for our SEO pricing postAhrefs organic traffic trend before disavowing for our SEO pricing post

After disavowing, it’s flatlining:

Ahrefs organic traffic trend after disavowing for our SEO pricing postAhrefs organic traffic trend after disavowing for our SEO pricing post

Long story short? Disavowing might have had a small positive impact, but I believe it’s more likely that a long downward trend is just finally leveling off.

Ahrefs 6 month traffic trend for our SEO pricing postAhrefs 6 month traffic trend for our SEO pricing post

This page was our list of top YouTube searches.

For the 20-day period before the disavow, the post got 291 organic visits. This fell by 8.25% to 267 visits in the following 20 days (when the disavow was in place).

Traffic fell by 8.25% after disavowingTraffic fell by 8.25% after disavowing

Before disavowing, organic traffic to the post was trending upward:

GSC organic traffic trend before disavowing for our list of top YouTube searchesGSC organic traffic trend before disavowing for our list of top YouTube searches

After disavowing, it’s trending downward:

GSC organic traffic trend after disavowing for our list of top YouTube searchesGSC organic traffic trend after disavowing for our list of top YouTube searches

Ahrefs’ data tells the same story…

Before disavowing, estimated organic traffic was trending upwards:

Ahrefs organic traffic trend before disavowing for our list of top YouTube searchesAhrefs organic traffic trend before disavowing for our list of top YouTube searches

After disavowing, it’s trending downwards:

Ahrefs organic traffic trend after disavowing for our list of top YouTube searchesAhrefs organic traffic trend after disavowing for our list of top YouTube searches

The results seem pretty clear: disavowing likely had a negative impact—especially with a big drop in estimated traffic around ten days after.

Traffic drop after disavowingTraffic drop after disavowing

This page was our list of top Bing searches.

For the 20-day period before the disavow, the post got 156 organic visits. This grew by 12.82% to 176 visits in the following 20 days (when the disavow was in place).

Traffic grew by 12.85% after disavowingTraffic grew by 12.85% after disavowing

Before disavowing, organic traffic to this post was trending upward:

GSC organic traffic trend before disavowing for our list of top Bing searchesGSC organic traffic trend before disavowing for our list of top Bing searches

After disavowing, it’s still trending upward:

GSC organic traffic trend after disavowing for our list of top Bing searchesGSC organic traffic trend after disavowing for our list of top Bing searches

Ahrefs tells a slightly different story here…

Before disavowing, estimated traffic was trending ever so slightly (it really is slight!) downward:

Ahrefs organic traffic trend before disavowing for our list of top Bing searchesAhrefs organic traffic trend before disavowing for our list of top Bing searches

After disavowing, it’s the same story:

Ahrefs organic traffic trend after disavowing for our list of top Bing searchesAhrefs organic traffic trend after disavowing for our list of top Bing searches

So, disavowing seemed to have little or no impact here

What does all of this mean?

My interpretation of these results is that disavowing “toxic backlinks” basically did nothing. It seemed to hurt one page a bit, maybe slightly help another, and have no impact on another.

In short, blindly disavowing “toxic backlinks” reported by SEO tools is unlikely to have much if any positive impact—at least according to our data.

Is this a surprise? Not really. Google has been saying this pretty much forever:

John Mueller on RedditJohn Mueller on Reddit

That said, while the most likely outcome of disavowing is basically nothing, it’s definitely still risky. Disavowing “toxic backlinks” could tank your traffic, as this reply to John on Reddit illustrates:

Reply to John Mueller on RedditReply to John Mueller on Reddit

Does this mean that disavowing is always a bad idea? No. If you already have a manual penalty for unnatural links or a very large number of manipulative links (e.g., paid links), then you should absolutely disavow. 

Google recommends this…

You should disavow backlinks only if:

You have a considerable number of spammy, artificial, or low-quality links pointing to your site,

AND

The links have caused a manual action, or likely will cause a manual action, on your site.

… and so does Marie Haynes:

There are two situations where we will recommend to our clients a thorough link audit followed by filing a disavow:

  • The site has a manual action for unnatural links in GSC.
  • The site has a very large number of links that we feel the webspam team would consider to be “manipulative”.
Marie HaynesMarie Haynes

If that’s not you, then disavowing “toxic backlinks”—especially those reported by SEO tools—probably isn’t the best idea or use of your time. As Marie Haynes said, they’re unlikely to be truly toxic anyway:

I find that the truly toxic links…the ones that could have the potential to harm your site algorithmically are rarely returned by an SEO tool.

Marie HaynesMarie Haynes

That said, plenty of SEOs don’t agree with this advice and are convinced that disavowing “toxic backlinks” helps. If that’s you and you’re seeing good results from disavowing, fantastic! Don’t let me stop you 🙂

For everyone else, it’s probably not the best idea…

This isn’t the first time we’ve studied this either. My colleague Patrick disavowed all links to these same three posts back in 2021—and traffic fell off a cliff:

Impact of disavowing all backlinks from our previous studyImpact of disavowing all backlinks from our previous study

We didn’t specifically disavow “toxic” backlinks here, but links clearly still help pages rank. If an SEO tool wrongly labels some of these helpful links as “toxic” and you disavow them, it could harm your traffic.

My advice? Spend your time improving your SEO, not disavowing “toxic backlinks” that might actually be helping you!

Got questions? Disagree? Ping me on LinkedIn (or X if you insist!)





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By Ryan Bullet

I am interested in SEO and IT, launching new projects and administering a webmasters forum.

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