Woolworths customers around the country are trying to understand why the supermarket giant is chucking in free Google Home Minis with their groceries.

Several shoppers who order their groceries online have reported finding the freebie placed within their delivery, with little explanation other than a thank you note.

“Thanks for picking Woolworths, we hope you enjoy your Google Home Mini,” it reads.

Nonetheless, they’re not complaining.

It’s a welcome surprise for customers that comes days after a massive recall on contaminated milk products that hit customers in New South Wales and Victoria.

Chevron Right Icon 'What a pleasant surprise.'

Shoppers are finding a rather generous freebie inside their online deliveries. Credit: Facebook/Markdown Addicts Australia

“Umm so just had my groceries delivered and this was inside one of the bags...what a pleasant surprise, thanks Woolworths,” one delighted shopper wrote in the Facebook group Markdown Addicts Australia.

She’s far from the only one to find the unexpected gift in her groceries delivery.

“Wow thanks so much #Woolworths for the surprise inclusion of the Google Home Mini with my grocery delivery. I just need to see if it can do the housework for me,” influencer Bec Derrington wrote earlier this year.

Receipts confirm that there are no strings attached to the freebie – but it seems there’s something in it for Woolies too.

“With a Google Home, customers can add items to their Woolworths shopping list via voice as and when they think of items around the house,” a Woolworths spokesperson told Yahoo Finance.

“To get started, customers can simply ask their Google Home Mini ‘Ok Google, speak to Woolies.’

“From time to time, we like to send Google Home Minis with home deliveries to online customers as a gift with purchase."