Google Ads & PPC Management
If your ad spend increases each month while qualified leads flatline, you are likely subsidising irrelevant clicks. Here is how to audit your account, implement an enterprise-grade negative keyword strategy, and lower your cost per lead.
Every day, Australian service businesses, B2B enterprises, and e-commerce stores pour ad budget directly into Google’s revenue reserves without generating a single qualified inquiry.
The symptom is familiar: impression volumes look healthy, click-through rates seem acceptable, but the sales floor receives phone calls asking for free advice, entry-level jobs, or products the business doesn’t sell.
When Google Ads is wasting money, the culprit is rarely poor ad copy or subpar landing page design. In over 80% of the account audits conducted by Business Cherub, the primary driver of budget hemorrhage is unchecked query expansion paired with an absent or poorly structured negative keyword strategy.
Without proactive exclusions, Google’s machine-learning bidding models will match your high-value keywords to queries that have zero commercial intent. To lower cost per lead in Google Ads, you must instruct the algorithm not just on who to target, but on who to actively exclude.
A critical distinction that separates novice PPC management from high-performance search campaigns is the difference between:
Because Google has systematically expanded the looseness of phrase match and broad match targeting over recent years, your keywords no longer function as rigid constraints.
Your Target Keyword (Phrase Match):
“commercial conveyancing lawyer”
Actual User Queries Triggering Your Ad:
→ “how to become a commercial conveyancing lawyer” (Job seeker)
→ “free commercial conveyancing checklist pdf” (DIY researcher)
→ “commercial conveyancing salary melbourne” (Career explorer)
In this scenario, three out of four clicks bleed your daily budget on individuals who will never sign a retainer. At an average cost-per-click of $15 to $45 in competitive Australian commercial sectors, an unmanaged account can waste thousands of dollars weekly on clicks that never had a chance of converting.
Simply throwing random words into a negative list is insufficient. Negative keywords behave under completely different rules than standard targeting keywords.
| Negative Match Type | Syntax | What It Blocks | What It Permits |
|---|---|---|---|
| Negative Broad | free | Blocks any query containing the word free, regardless of where it appears in the sentence. | Allows queries that miss the term completely or misspell it (e.g., fee or fre). |
| Negative Phrase | “cheap repairs” | Blocks searches containing cheap repairs in that exact order, even with words before or after. | Permits searches where the order is flipped (e.g., repairs that are cheap). |
| Negative Exact | [emergency plumber perth] | Blocks only the literal search query emergency plumber perth. | Permits best emergency plumber perth or emergency plumbers perth. |
Theme: 7 Ways to Fix Negative Keywords and Lower CPL
Certain categories of search queries universally drain budgets across lead generation accounts. Create master shared lists inside your Google Ads Shared Library and apply them across all current and future campaigns.
Stop manually scrolling through thousands of lines of data. Filter your Search Terms Report systematically:
If you run structured campaigns separated by intent (e.g., Emergency Hot Water vs General Plumbing), your ad groups will compete against one another unless cross-negatives are applied.
Add the exact keywords of your specific ad groups as negative phrase matches to your broad ad groups. This forces Google to direct searchers to the most relevant ad copy and landing page, increasing Quality Score and dropping cost-per-click.
Bidding on competitor brand names is an established PPC tactic, but mixing competitor intent into your primary service ad groups ruins conversion rates.
Unless you are deliberately running a dedicated, high-budget competitor conquesting campaign with tailor-made comparison landing pages, place all known competitor brand names on an account-wide negative list. Don’t pay for visitors who are simply looking for your rival’s portal login or physical address.
Setting geographic targeting to a specific radius does not fully protect you. Searchers outside your service area who append location tags to queries (e.g., “commercial fitout Brisbane” when you operate only in Sydney) will slip through if your location options permit interest-based targeting.
Audit your Search Terms Report for suburban names, interstate cities, and international locations outside your delivery footprint, and bundle them into a comprehensive Regional Negative Exclusion List.
Search terms with multiple real-world meanings drain budgets silently.
Negative keyword management is not a one-time setup task; it is an active risk management discipline.
Implement automated Google Ads scripts that alert you whenever a search term spends 1.5x your target CPL without a conversion. Couple automation with a mandatory weekly 30-minute review of new query volumes.
Theme: Ungoverned PPC Account vs. Negated Architecture
| Metric / Attribute | Ungoverned Google Ads Campaign | Account with Negative Strategy |
|---|---|---|
| Wasted Click Ratio | 30% – 50% of total spend | Less than 5% of total spend |
| Average Quality Score | 3 / 10 to 5 / 10 (mismatched intent) | 7 / 10 to 10 / 10 (tight relevance) |
| Click-Through Rate (CTR) | Low (below 2.5%) | High (5% – 12%+) |
| Cost Per Lead (CPL) | Inflated by irrelevant clicks | Drops by 20% to 45% |
| Lead Quality | Frequent non-buyers, students, DIYers | Predominantly high-intent commercial buyers |
For campaigns spending more than $2,000 per month, review your search terms weekly. High-volume accounts spending $10,000+ monthly benefit from twice-weekly audits or automated script alerts to prevent runaway spend on trending queries.
Use Negative Broad for single-word non-commercial terms (such as free or jobs). Use Negative Phrase for multi-word queries where word order is essential to the context (such as “how to do”). Use Negative Exact sparingly, reserved for specific high-volume queries you want to block without touching nearby variations.
No. Google does not negate misspellings, singulars, or plurals. If you negate "second hand", an ad can still trigger for "secondhand" or "2nd hand". You must include all common variations in your negative lists.
Because negative keywords instantly prevent your ads from entering auctions for unqualified queries, accounts typically see an immediate drop in wasted daily spend within the first 48 to 72 hours. When those savings roll back into high-converting search terms, overall cost per lead typically improves within two weeks.