A mum stashed a £5 note under the toilet lid to find out which of her boys was peeing on seat.
Victoria Everest was “sick and tired” of the boys in her house constantly missing the target with their poor aim.
When she confronted 50-year-old husband Paul and sons Dawson, 12, and Finlay, 13, they said they were innocent, claiming to always lift the lid.
So she sprung a trap to catch out the trio by sticking a fiver in a sandwich bag and then taping it underneath the seat.
It took Dawson and Finlay three trips each before they found the cash, proving that they were part-time loo seat lifters.
Victoria, 43, said: “I just got sick and tired of cleaning the seat every time I went upstairs.
“One evening I sat on the toilet and I felt it, stood up so quickly, then jumped in the shower to wash it off. And I thought, ‘Someone’s going to get it, but I don’t know who.’
“It’s a running joke in every house, I think, but it just got to a point where I had to do something about it.”
The family, of Tunbridge Wells, Kent, now all keep the toilet spotless. Victoria added: “I’ve stopped now, but they keep sneakily looking every now and again and checking. But now I have a clean bathroom and it’s been worth every penny.
“If the standards started to slip I would do it again, but obviously it can’t be a regular thing because I’d need another income.”
A poll recently found thousands of parents still struggle to train their children to wash their hands after coughing or using the toilet.
Despite parents’ efforts, the study also found that 16% of them worry they aren’t always setting the perfect example for their kids.