Yeah, the conversion tracking nightmare is so real for local service businesses. Mobile detailing especially - the journey from ad click to actual booking is messy. Phone calls, form fills that happen offline, or people just showing up and paying on the day. All that gets lost in the pixel ether.
Maximise Conversions is basically useless if the data feeding it is garbage. Phantom conversions from God knows where ruin everything. If it's counting random page views as leads, the algorithm will optimise for more of that noise.
£30-40 per actual customer isn't terrible for local services, but if you're paying for fake conversions then yeah, you're burning budget on thin air.
First thing I'd do: audit what's actually being counted. double-check the tag setup. Make sure you're not rewarding every bot visit or accidental click on a form field.
Honestly, switching back to Maximise Clicks with a strict CPC cap might be your safer bet. Also, use ad scheduling so you're only running when you can actually pick up the phone or respond fast.
Quick one - are you tracking phone calls as conversions too? Or just the form fills? That makes a huge difference.
How's your average job value looking? Trying to figure if £35-40 per lead works for your margins long-term.