- Google filters many invalid clicks before you are charged and credits some later.
- Invalid click columns and billing adjustments show what Google caught.
- Placement, network and IP exclusions reduce the rest.
- Spam leads are often a bigger problem than spam clicks, so protect forms too.
What counts as an invalid click?
Google defines invalid clicks as clicks it believes are not genuine user interest. That includes deliberate fraud, such as competitors or bots clicking repeatedly, and accidental clicks, such as a double click on the same ad. Google uses automated filters and manual review to detect them.
Most invalid clicks are filtered in real time, so you are never charged for them. Others are found later, and you receive a credit. It helps to separate true click fraud from low-quality traffic that is genuine but useless, such as people who were never likely to buy. Google only credits the first. The second is your job, and it is usually where most waste sits.
Where can I see invalid clicks and credits?
In the campaigns view, add the Invalid clicks and Invalid click rate columns. They show how many clicks Google filtered out, which you were not charged for. This tells you whether a campaign attracts more invalid activity than others, for example a Display campaign compared with Search.
Credits for invalid activity found after billing appear as adjustments in your billing summary and transactions. If you have strong evidence of invalid clicks that Google did not catch, such as server logs showing repeated clicks from one source, you can ask Google to investigate through the Help Centre contact form. Keep your evidence specific, with dates, times and IP addresses.
Which placement and network exclusions help?
Check these first, before buying extra tools.
- Search PartnersCompare Search Partner traffic with Google Search on conversions and lead quality. If it is clearly worse, switch it off for that campaign.
- Display and Demand Gen placementsReview where ads showed and exclude apps and sites that bring clicks but no real leads. Account-level placement exclusions save repeating this per campaign.
- Content suitability settingsExclude content types and inventory that do not suit your brand, such as some mobile games or parked domains.
- Performance MaxUse account-level placement exclusions and brand exclusions, and review the placement and search term insights it does provide.
- Location optionUse people in or regularly in your locations, so clicks from outside your market do not slip in through interest targeting.
When do IP exclusions help?
IP exclusions stop your ads from showing to specific IP addresses or ranges. They are useful when you know a source, such as your own office, a competitor's office or a single address that keeps clicking without converting. Add them in campaign settings, or at account level where your account offers it, and check the current Help page for limits per campaign.
They have clear limits. Many people share IP addresses, especially on mobile networks, and IP addresses change. Bots often rotate through many addresses. So IP exclusions are a precise tool for a known problem, not a general defence. Third-party click fraud tools can automate exclusions, but judge them on whether lead quality improves, not on how many clicks they say they blocked.
How do I stop spam form leads?
Fake leads waste staff time and train bidding on the wrong signal.
Add spam protection
Use reCAPTCHA or a hidden honeypot field on every form, including landing page builders.
Validate fields
Check phone number formats, block disposable email domains and reject obviously fake names.
Lead form asset setting
If you use Google lead form assets, choose the option that favours more qualified leads over more volume.
Add a qualifying question
A question about budget, timing or service area filters out bots and casual enquiries.
Count only real submissions
Fire the conversion tag on a successful, validated submission, not on a button click.
How do I optimise for qualified leads instead of clicks?
If bidding counts every form fill as a success, it will happily buy cheap traffic that produces junk leads. The lasting fix is to tell Google which leads were real. Mark leads in your CRM or a lead sheet as qualified, unqualified or won, then send those outcomes back with offline conversion imports.
Once qualified leads are the primary conversion, Smart Bidding moves spend towards searches and placements that bring them. Spam and low-quality sources become expensive in the system's eyes and get less budget. Combined with negative keywords and the checks in our guide to auditing your account for wasted spend, this does more than any blocking tool.
What should Pakistani, Gulf and UK advertisers watch for?
In Pakistan and the Gulf, much traffic comes from mobile networks where many users share IP addresses, so IP exclusions can block real customers. Lean on placement exclusions, especially for mobile apps in Display and Demand Gen, and on lead qualification. WhatsApp leads are harder for bots to fake than forms, but still track and qualify them.
Campaigns targeting the UK or US from Pakistan should check that the location setting excludes people outside the target country, as broad interest targeting can bring clicks from anywhere. UK advertisers should note that consent choices limit some traffic data, so log files and CRM outcomes may tell you more about lead quality than Google Analytics alone.
How we handle this for clients
We start with an audit of invalid click data, network settings, placements, search terms and form setup. Then we switch off or limit sources that bring poor leads, add placement and IP exclusions where evidence supports them, and add spam protection to forms. Conversion tags are moved to fire only on validated submissions.
Where possible, we connect lead outcomes from the client's CRM, so bidding learns from qualified leads. We review lead quality with the client on a regular schedule rather than relying on click reports alone. This is part of our Google Ads audit and optimisation service.

