Chinese families have swarmed stores in Hong Kong selling foreign-made milk products as trust in China-made products plummets.
Normally, mainland visitors to Hong Kong flood to luxury goods stores for handbags and jewellery during the national holiday.
But China's toxic milk scandal, which has left 53,000 children ill and four dead has changed the desire for Gucci and Louis Vuitton.
One visitor, Emily Zheng, a mainland Chinese visitor, bought as many tins of Japanese-made infant milk powder as the Hong Kong store would allow her.
Zheng, who lives in the neighbouring southern Chinese province of Guangdong, had travelled across the border to stock up on supplies. After the toxic milk scandal, she does not trust China made products.
"We will not go for mainland milk again. It is so dangerous," she told AFP.
"My daughter is expected to deliver a baby girl next week. We are worried about a potential shortage of formula
and thought it would be safer to buy more now. You can't expect a baby to come to this world without food, can you?"
Fears about drinking Chinese-made milk tainted with melamine have continued to grow.
The toxic chemical, normally used to make plastic, can make a dairy product appear richer in protein than it actually is, and unscrupulous farmers have been adding it watered-down milk to increase profits.
The scandal has been a public relations disaster for China, already reeling from a string of food safety controversies, and has led governments worldwide to impose massive recalls since it was revealed several weeks ago.