Look, I’ll be straight with you. Google’s "Performance Max"—or PMax as the nerds call it—is basically a black box with a giant 'Insert Money Here' slot on the top.
When Google first rolled this out, they pitched it as the holy grail. They told small business owners: "Just give us your budget, some photos, and a link to your site, and our smart computers will find you customers everywhere!"
Sounds great, right? You can get back to running your business while the robots do the heavy lifting.
But here’s the reality we see every day at Local Marketing Group: If you just let Google do whatever it wants, it’ll spend your money in the easiest way possible, not the most profitable way. It’ll show your ads to people who already know you, or on dodgy mobile apps where kids are accidentally clicking your banners while playing games.
If you’ve noticed your ad spend going up but your phone isn’t ringing any more than usual, you’re probably burning cash on Google Ads without even realising it.
I’ve spent thousands of hours inside these accounts. I’ve seen what works for a plumber in Chermside and what flops for a boutique shop in Paddington. This isn't about the "algorithm." It’s about making sure Google’s robots are working for your bank account, not theirs.
What is this thing, anyway?
Think of PMax like a Swiss Army knife that’s a bit too sharp. It puts your business everywhere at once: Google Search, YouTube, Gmail, Maps, and all those random websites you see ads on.
In the old days, we’d set up a search campaign for people looking for "emergency electrician Brisbane." Simple. Direct.
With PMax, Google decides where the ad goes. It might show a video on YouTube to someone who might need an electrician, or it might show a picture on a blog.
The problem? Google loves spending your daily budget. If it can’t find someone searching for you, it’ll find someone else to show an ad to, even if they have zero intention of buying.
The "Brand" Trap: Why your results look better than they are
This is the biggest lie in modern marketing.
Google will often claim a PMax campaign is killing it. You look at the report and see a massive return on your spend. You’re stoked.
But then you look closer. A huge chunk of those sales came from people who typed your exact business name into Google.
Think about that. If someone searches for "Your Business Name Pty Ltd," they already know you. They were going to call you anyway. You shouldn't be paying $5 a click for your own name.
We call this the "Brand Trap." Google takes credit for the sale, charges you for the click, and makes the campaign look like a hero. In reality, it’s just paying for customers who already know you.
The Fix: You need to tell Google to stop bidding on your business name inside your PMax campaign. Force it to go out and find new people who haven't heard of you yet. That’s how you actually grow.
Give the robot better directions
Google’s AI is like a very fast, very dumb delivery driver. If you give it a vague address, it’ll just drive around in circles until it runs out of petrol.
To make PMax work, you have to give it "Signals." This is just a fancy way of saying "Hey Google, look for people like this."
Most people leave this blank or let Google guess. Huge mistake.
You already have a list of your best customers. Their emails, their phone numbers. You can upload that (securely) and tell Google: "Find me more people who look like my best clients."
Using your own customer list is the single fastest way to stop wasting money. It gives the AI a head start so it doesn't have to spend $2,000 of your money just "learning" who might like your service.
Your photos and words actually matter
Because PMax shows ads on YouTube and other websites, your photos and headlines are doing the heavy lifting.
If you use boring stock photos of people in suits shaking hands, people will ignore you. If you use a grainy photo of your dusty ute, people will ignore you.
You need real, high-quality photos of your work, your team, and your shop.
And for the love of all that is holy, stop using corporate speak. "We provide industry-leading solutions for residential infrastructure." Nobody talks like that.
Try: "We fix your blocked drains in an hour or you don't pay a cent."
Google will mix and match your headlines and images. If you provide five rubbish headlines, you’ll get thousands of rubbish ad combinations. Take twenty minutes, sit down with a coffee, and write things that would actually make you click.
The "Garbage In, Garbage Out" Problem
I see this all the time with Brisbane tradies. They set up their website so that every time someone clicks a phone number, it counts as a "conversion" or a win in Google’s eyes.
But what if that person hung up after two seconds? What if it was a telemarketer?
If you tell Google that every single click is a success, Google will go out and find more people who click buttons but never buy anything.
"The biggest mistake I see isn't the budget size, it's business owners letting Google's AI optimise for 'junk' leads that never turn into a bank deposit."
— Angus Smith, Founder & Marketing Director
To fix this, you have to be picky. Only tell Google it’s a win when someone actually fills out your quote form or stays on the phone for more than 60 seconds. If you feed the robot junk data, it’ll give you junk results.
Video: The hidden budget eater
If you don’t upload a video to your PMax campaign, Google will make one for you.
And honestly? They are hideous. It’s usually a weird slideshow of your website photos with some elevator music in the background. It looks cheap and it makes your business look like a scam.
But here’s the kicker: Google will spend your money showing that ugly video on YouTube.
If you don't have a good video, you're often better off not letting Google run video ads at all, or at least being very careful with how much budget you let it put there.
How long does it take to see results?
If an agency tells you they can fix your PMax campaign and double your leads by tomorrow, they’re lying to you.
Because this system relies on "learning," it usually takes about 4 to 6 weeks to really settle down.
The first two weeks are usually a bit of a rollercoaster. You might see a lot of spend and not many calls. Don't panic and pull the plug.
But if you’re two months in and you’re still not seeing more bookings, something is fundamentally broken. It’s usually one of three things: 1. Your website is hard to use on a phone. 2. Your offer isn't as good as your competitors. 3. You haven't excluded the "junk" locations and search terms.
Where is your money actually going?
One of the most annoying things about PMax is that Google hides the reports. It’s hard to see exactly which website your ad showed up on.
However, there are ways to see the "Placements." If you find your ads are showing up on "Kids Cartoon Channel" on YouTube, you are lighting money on fire.
Why would a local lawn mowing business show ads on a kids' channel? Because the kid is using their parent’s iPad. Google sees the parent’s account and thinks "Aha! A homeowner!" The kid clicks the ad because it’s shiny. You pay $4.
You have to go in and manually exclude these categories. It’s a bit of a chore, but it saves you a fortune in the long run.
Is PMax right for every business?
Honestly? No.
If you have a very small budget—say, $30 a day—PMax is often a waste of time. It tries to do too much with too little. You’re better off sticking to a simple Search campaign where you can control every cent.
But if you’re spending $100+ a day and you want to scale up, PMax is a powerful tool—if you keep it on a short leash.
Summary of what you should do right now
If you’re running one of these campaigns and you’re worried it’s not working, do these four things:
1. Check your "Insights" tab. See what search terms are actually triggering your ads. If it’s all your own business name, you’ve got a problem. 2. Upload your customer list. Give the robot a map so it knows who to look for. 3. Look at your photos. If they look like every other business in Brisbane, change them. Get some shots of your actual team at work. 4. Check your phone tracking. Make sure you're only counting real leads as wins, not just every random click.
Marketing shouldn't be a mystery. It’s just math and common sense. If you put $1 in, you should be getting $5 or $10 back in work. If that’s not happening, the "AI" isn't doing its job.
If you want someone to take a look under the hood and tell you if your ads are actually working or just making Google rich, give us a shout at Local Marketing Group. We don't do jargon, and we definitely don't do rubbish results.
You can reach us here: https://lmgroup.au/contact