Someone recommended you last week. A neighbour asked who did the bathroom, your customer typed your name and maybe your number into a message, and that was the whole event. You did not see it, you will never know it happened, and there is no version of it left anywhere.
For a local service business that is what word of mouth is. Not a campaign to launch. A thing that already happens, in a channel you have no access to, and then ends.
What ranks for this term is brand-side
Search the phrase and you get the agency literature: how to engineer virality, seeding programmes, hashtag challenges, influencer tiers, buzz. It is written for companies with a marketing department and a product that strangers might plausibly talk about unprompted.
Nobody is going to make a drain unblocking go viral. The conversation about your business is not something you can start, because it is already happening and it is not about you, it is about a neighbour's problem.
The spoken recommendation has a reach of one and a lifespan of a minute
Two limits do the damage, and both are structural.
Reach is one person. Your customer tells whoever asked. The recommendation does not reach the next six people who needed the same job and never thought to ask them.
Lifespan is the conversation. The name is correct in the moment it is said and then it decays, because a name said out loud needs to be remembered, spelled and found again later. Half of a recommendation surviving is someone saying "it was a guy my sister used, I can ask her."
The spoken recommendation, in other words, is the strongest form of marketing you have and it is also the one that disappears fastest.
A review is the same recommendation, recorded
A review is word of mouth that was written down in a public place. That one change in format alters both limits.
It reaches people who never asked anyone. A stranger comparing three local businesses in a map result reads it, and that stranger was never going to run into your customer.
It does not expire. The review from a job you did in spring is doing the same work in autumn, for a person who has no idea who wrote it. Nothing else you can collect at the end of a job behaves like that.
Which means the practical form of word of mouth marketing, for a business like yours, is narrow: catch the recommendation that was going to happen anyway, in writing, where a stranger will find it. The rest of the agency playbook does not apply to you, and that is fine, because the hard part was never getting people to talk about you. They already do.
So the work is the ask, not the marketing
If the recommendation already exists in spoken form, the only step missing is a written one. That is a single message after a finished job, pointing at your Google review link, and Google's own guidance describes the mechanism plainly: "To leave reviews, you can ask customers to visit a Google link or scan a QR code."
Three things make the difference between an ask that works and one that does not.
- Send it to everybody, every job, in the same words. A request you send when you have a good feeling about someone is a request you forget to send.
- Send one link that opens the review box, not directions to find your profile. Our review link generator builds that link from your business.
- Say what it is for. "It helps people find us" is true and it is a reason your customer can act on.
How to ask customers for reviews has the wording we send, and if the person you want to ask is likelier to pass your name along than to write anything, how to ask for a referral covers that ask and when it is the better use of the moment.
What you cannot do with it
Because reviews are the recorded form, the temptation is to treat them as a marketing channel and optimise them, and that is where businesses get into trouble. Google's prohibited merchant behaviour covers offering incentives, "payment, discounts, free goods and/or services," in exchange for a review, and it covers the quieter version too, "Discourage or prohibit negative reviews, or selectively solicit positive reviews from customers."
Both of those break the thing you were trying to build. The reason a stranger trusts a review is that your customer wrote it without being managed. Pay for it or filter it and you have an advertisement in the one spot on the internet where people go specifically to avoid reading one.
A quote you place yourself is a different asset with different rules, and testimonials versus Google reviews works through which to ask for.
The short version
Word of mouth is not a channel you build. It is a conversation that already happens about you, out of earshot, and then ends. The job is to get one copy of it written down somewhere permanent, and the way you do that is to ask every customer, the same way, after every job.