Retargeting windows for machinery: why 30 days is wrong for a six-month buying cycle

Written by Michael Nadalin, CEO and Founder · 14 Oct 2026 · 6 min read

Where did the 30 day window come from?

It came from ecommerce. Someone looks at a pair of boots, you chase them for a few weeks, they buy or they don't. Thirty days covers that whole decision with room to spare, so it became the default in most Meta Ads accounts and in most agency templates.

Agricultural machinery does not work like that. A grower who looks at a self-propelled sprayer in March is often not signing anything until August or September. He has to get through sowing, see how the season is shaping up, talk to the bank or the finance broker, get a trade-in valued and argue about it with his brother. That is five or six months, and I have seen it run past twelve on bigger gear.

So when I open a dealer's or manufacturer's ad account and see one retargeting audience set to 30 days, I know what is happening. They are paying to find the buyer, then letting him go about a sixth of the way through his decision.

What actually happens on day 31?

Nothing dramatic. That is the problem. The buyer quietly drops out of your audience and your ads stop showing. Nobody gets an alert. Your reporting still looks fine, because the people left in the 30 day pool are the freshest and cheapest ones.

Meanwhile he is still in the market. He is just in it with someone else's ads in his feed. The competitor who kept showing up through June and July looks like the serious operator, and you look like the mob that went quiet.

The other thing I see is a small audience getting hammered. A regional dealer might only get 1,500 to 4,000 site visitors in a month. Put a decent budget against a pool that small and frequency climbs past 10 or 12 inside a fortnight. The same bloke sees the same tractor photo every time he opens Facebook, then never sees you again. Too much, then nothing.

The windows I build instead

Meta lets you hold website visitors for up to 180 days. Engagement audiences, things like video viewers, lead form openers and people who have interacted with your page, can go out to 365 days. Customer and enquiry lists from your CRM do not expire at all. Most machinery accounts use a fraction of that.

I stack windows instead of picking one. Each layer excludes the one before it, so a visitor is only ever in one bucket at a time and you can control what he sees and how often.

The ranking below is the order I build them in. If you only have time to set up two, do the top two.

A longer window needs a different message at each stage

Stretching the window to 180 days and running the same ad for six months is nearly as bad as cutting it at 30. People go blind to it by week three.

What changes across the cycle is the question in the buyer's head. Early on it is whether this machine suits his country and his program. In the middle it is whether he can trust you and the gear. Late on it is the deal, the trade-in and whether he can get delivery before he needs it.

Timing matters as much as the day count. If a broadacre grower is flat out at seeding in May, I pull retargeting spend right back and run light proof content. The push goes on in the lull after sowing and again after harvest, when he has time to sit in the ute and think about next year. For hay gear the calendar shifts again. Match the message to the window and the window to the season.

How I split the retargeting budget across the windows

Retargeting should be a modest slice of total Meta Ads spend for most machinery businesses, usually somewhere between 15 and 25 percent. The rest goes into finding new rural buyers, because retargeting can only work on the people your prospecting brings in.

Inside that slice, I do not weight everything to the freshest visitors. The later windows hold fewer people but those people are closer to an order, so they earn a real share. This is my starting point for a six month cycle, and I adjust it once the sales data comes back.

Watch frequency by window, not across the account. I am comfortable with 4 to 6 a week in the first 30 days. From day 31 onwards I want it closer to 1 to 2 a week. You are staying in view, not shouting.

Judge it on the sale, not the form fill

This is where long windows usually get killed. Someone looks at the 91 to 180 day ad set, sees a cost per lead of $180 against $60 in the fresh window, and switches it off. On form fills alone that looks like the right call. It is often the wrong one.

The older audience produces fewer leads, but in my experience a much higher share of them are sales-qualified leads. They have done the research. They ask for a price on a specific model with a specific trade-in. A $180 lead that turns into a $400,000 machine is cheap. A $60 lead that wanted a brochure is not.

You only see that if the lead is tracked all the way to the sale. Every enquiry needs its source and ad set recorded against it in the CRM, the sales team needs to update the stage, and closed deals need to go back to Meta as offline conversions. Meta's own attribution only looks back seven days after a click, so on a six month cycle the platform will never tell you the truth by itself. Your CRM has to.

Set it up, give it a full buying cycle and then decide which windows earn their keep. That is how agriculture marketing should be measured: on machines sold, not farm equipment leads counted.

Written by

Michael Nadalin

Founder, Market Lead & Harvest Lead

Michael is the founder of both Market Lead and Harvest Lead, building lead and sales systems for agriculture and machinery businesses across Australia and the USA.