Retargeting — showing ads to people who have already visited your website but didn't buy or enquire — is one of the more cost-efficient paid channels for small businesses. The ads are cheap, the audience is warm, and the conversion rate is meaningfully higher than cold prospecting. It is also pointless if you don't yet have enough traffic to retarget. This guide sets out when retargeting is worth running, and how to set it up properly if it is.
When retargeting makes sense
You need at least 1,000 unique website visitors a month for retargeting to be worth setting up. Below that, the audiences are too small to deliver ads efficiently and you will pay above-the-odds CPMs. If your site is doing fewer than 1,000 monthly visitors, fix the traffic problem first — local SEO, organic content, Google Business Profile work — then come back to retargeting once the audience exists.
Step 1: Pixel your site properly
Two pixels at minimum:
We are ready to talk things through!
Contact Here- Meta Pixel — installed via a tag manager or directly, with conversion events for "lead", "purchase" and "contact"
- Google Ads tag — same logic, set up properly to feed the audience back to Google
Google Analytics 4 sits underneath both, capturing the underlying behaviour you'll segment on.
The mistake we see most often is a pixel that fires on every page but tracks no conversion events. That gives you an audience to retarget but no idea which retargeted users actually bought, so you can't measure return.
Step 2: Segment the audience properly
Don't retarget everyone the same way. The visitors who matter:
- Cart abandoners (e-commerce) — saw a product, added to cart, didn't check out. Highest-converting audience by far
- Service-page visitors who didn't enquire — looked at a service page for 30+ seconds, didn't fill the form
- Blog readers — engaged with content but never reached a service page
- Past customers — different message: re-engagement, upsell, review request
Each segment gets a different ad creative and a different offer.
Step 3: Match the message to the stage
The cart abandoner doesn't need to be told what your shop sells — they already know. Show them the exact product they looked at, with a small incentive (free delivery, 10% off). The blog reader hasn't shown commercial intent yet — show them a softer "ready to talk?" message rather than a product ad.
For Devon service businesses we typically run two or three creative variants per audience, swapping in real customer photos and quotes after the first week of data tells us which angles land.
Step 4: Realistic budgets
For a Devon small business with around 2,000–3,000 monthly site visitors, retargeting budgets typically sit at:
- £150–£300/month total ad spend across Meta and Google
- Frequency cap of 3–5 impressions per user per week (any more annoys people)
- Run windows of 30 days for cart abandoners, 60–90 days for warmer service segments, 180 days for past customers
This isn't a "get rich" channel. It's a low-noise top-up that recovers conversions you would otherwise lose.
Step 5: Read the numbers honestly
Track ROAS (return on ad spend) on cart abandoner campaigns and cost-per-lead on service-business retargeting. Healthy benchmarks for Devon small businesses we work with:
- E-commerce cart abandoner retargeting: 3:1 ROAS or better, often 5–8:1
- Service-business retargeting: cost-per-lead 30–50% lower than cold acquisition
If you're not seeing those numbers after 30 days of running, the problem is usually the audience size (too small) or the creative (too generic).
When not to retarget
Skip retargeting entirely if:
- You're a one-location service business with mostly word-of-mouth referrals
- Your average sale is under £20 — the maths doesn't work
- You haven't yet got conversion tracking working properly
- Your traffic is below 1,000/month
We set up and run retargeting as part of the £300/month retainer for clients where it makes sense. If you'd rather just get the diagnosis first — whether retargeting is right for your business — call or WhatsApp 07887 988780.