A colony of germs can grow back to its original size within hours of getting zapped by an antibacterial spray – making them less effective than bar soap.
Northumbria University biomedical expert Claire Lanyon claimed that parents only need to wipe down surfaces after handling eggs or raw meat to make kitchens safe for kids.
She told The Telegraph: “Some bacteria can divide every 20 minutes so it doesn’t take long for one cell to become one million cells – in fact it would only take around 6.6 hours.
“The point of the show is you don’t need to be so fastidious in cleaning your house from top to bottom because you can’t actually remove all bacteria and nor would we want to – exposing ourselves to everyday pathogens is good in keeping the immune system healthy and strong.
“The research shows you can quite quickly reestablish bacteria that we have in our homes anyway.
“You’re never going to get your home sterile and clean – no way – and there are better things to be doing with your time.
“Spend your time cleaning up after food that’s known to be high risk.
But on a Sunday, if your kitchen is clean, don’t be cracking out the antibacterials and wiping it down because it’s an absolutely redundant exercise – the minute you walk around the kitchen you’re shedding bacteria and fungi into the area again and it’s just recolonising.”
“Personally I don’t waste my time purchasing antibacterial products for the home.
“Our research found that a lot of antibacterial cleaning products were not as effective as good old fashioned soap and water.”