"Does the disavow tool even do anything?" is one of the oldest, most recurring questions in SEO, and it resurfaced again in early September 2026 through a specific, documented exchange with Google. A site owner reported that rankings never recovered after disavowing a batch of links, and Google's Search Liaison, John Mueller, responded directly: the tool "does have effects, but it has its place & time."
That single line, taken alone, settles a lot less than it might seem at first glance. The tool working in general does not mean it was the right move in this particular case - and the details behind the exchange are more instructive than the quote alone.
The Case Behind the Quote
The site in question had been buying guest posts and links through Fiverr, a freelance marketplace well known for exactly this kind of manipulative link. When rankings sagged, the owner disavowed a portion of those links, expecting recovery. Nothing about rankings changed, which is what led to the question Mueller ultimately answered. His full response did two things at once: confirmed the tool has a real effect, and clarified that disavowing a handful of links will not sink a site out of search by itself. Put together, that means the site's actual problem was never a broken tool - it was building a link profile on purchased links in the first place.
Reading the Case Correctly
Three groups of site owners read this story and draw three different conclusions, and only one of them is right:
- Some conclude "disavow doesn't work" - wrong, Mueller directly said it has effects.
- Some conclude "I should disavow more aggressively" - also wrong, since the root problem was the link-buying, not an under-sized disavow file.
- The accurate reading: disavow is a targeted fix for a specific, documented problem, not a general-purpose ranking recovery tool, and this case is a clean illustration of that distinction.
A Quick Way to Tell Which Situation You're In
Ask two questions before touching the disavow tool. First: is there a manual action in Search Console specifically citing unnatural links? Second: did the site (or a past SEO vendor) knowingly build links through marketplaces, bulk guest posting, or similar schemes? A clear "yes" to either question points toward disavow being genuinely relevant. A firm "no" to both usually means the ranking issue is very likely something else entirely - content, technical SEO, or an algorithm update that happened to land at an unfortunate time.
For a broader look at building links without manipulative signals in the first place, see our guide to link building for marketing and SEO.
What the Tool Actually Requires to Work
Disavow only functions as intended when the input is specific: named domains or URLs with a documented reason for exclusion, submitted through Search Console, followed by a recrawl period that typically runs to several weeks rather than days. A vague or overly broad file - "disavow everything under a certain authority score," for instance - tends to produce weaker, harder-to-interpret results than a narrow, evidence-based one.
Why This Question Keeps Coming Back
Versions of this exact question surface every few months, usually right after someone's rankings drop for reasons unrelated to links at all. The pattern is consistent: a ranking dip triggers panic, panic triggers a search for something actionable, and disavow feels actionable in a way that "wait and diagnose properly" does not. That is exactly why cases like this one matter - they give site owners a documented, specific example to compare their own situation against, instead of reasoning from anxiety alone.
What a Healthy Link Profile Looks Like Instead
Sites that never need to think about disavow tend to share a pattern: links accumulate slowly through genuine mentions, coverage, and outreach, rather than being purchased in bulk from a single source at a single point in time. That slow, varied accumulation is itself one of the signals Google's systems use to distinguish natural growth from manufactured link building - which is part of why disavow rarely helps sites that never manipulated their profile to begin with.
FAQ
Does the disavow tool ever hurt rankings? Not directly - it only tells Google to ignore specific links. The risk is disavowing links that were actually helping, which can quietly reduce their positive contribution.
Is there a minimum number of links that need disavowing to see an effect? No fixed number - Mueller specifically noted that disavowing a handful of links will not sink a site out of search, so effect size scales with the severity of the underlying problem.
How is this case different from routine link audits? Routine audits with no confirmed problem rarely need disavow at all - Google's systems already discount most low-quality links automatically without site owner input.
Should every site run a disavow check periodically? Google does not recommend that as standard practice. It is a response to a specific, evidenced problem, not a maintenance task.
What's the fastest way to know if a ranking drop is link-related? Check Search Console for a manual action first. Its absence is a strong signal the cause lies elsewhere.
Does buying a small number of links ever justify disavowing them preemptively? Not on its own - a handful of purchased links rarely triggers a manual action or a measurable ranking effect, so the more useful step is simply stopping the purchases rather than filing a disavow for a risk that has not materialized.
Bottom Line
Google's answer confirms the disavow tool works, but the case behind it shows exactly where the limits are: it fixes a specific, documented link problem, not a general ranking slump, and it cannot undo the risk of having built a manipulative link profile in the first place.
