THEY call her “the toilet whisperer”.

Mum-of-three Amanda Jenner, 42, gets paid $US2600 ($3430) to aid children along the toilsome milestone that is potty training so that their parents don’t have to.

In order to fully understand the child’s toilet training needs, British woman spends quality time observing the family.

“I go to the house for three days and live with the family, but if it takes more days then I will stay an extra couple of days,” Ms Jenner said.

Equipped with treats and heaps of patience, Ms Jenner has spent the past 18 years helping children as old as nine learn to go in the potty like a big kid. Most children she visits are over the age of three.

“In the 1950s the average age at which children were potty trained was 15 months, as they always had family members with them,” Ms Jenner said.

“Now, as parents are having to go back to work and children’s care is left to a combination of parents, nurseries, and sometimes nannies, the average age is now three-and-a-half.”

A lack of potty training doesn’t only affect frustrated parents, it can be quite traumatic for the child.

“It has such a huge effect on the child’s life. They can’t go to sleepovers, they can’t spent time with their friends, and they are worried about going to school,” Ms Jenner says.

“It’s becoming an even bigger problem, but I’m passionate about making a difference about it.”

While thousands of dollars may seem like a lot to pay for a potty training service, Ms Jenner says she attracts all types of families who are desperate to help their children grow up to be healthy.

“Some of the clients are very wealthy, but some of them are actually quite average. The sad thing is that almost all of them think they have failed, when it’s just a really difficult thing to do.”

Ms Jenner knows from personal experience just how particular children can be when it comes to going for the toilet.

Her oldest child refused to use any other toilet but her own, so Ms Jenner was forced to lug her toddler’s training toilet with them everywhere they went.

One day when Ms Jenner was emptying her child’s waste into a street drain and a passer-by complained, she thought of a brilliant idea.

The mum was inspired to invent a tidy, portable toilet called the My Carry Potty that parents can easily tote around and even send with their kids to school.

Ms Jenner explained that a child’s inability to go potty not only affects individual families but educators as well.

“The teachers cannot teach properly if they keep having to look after children who have wet themselves, and they don’t have the time to devote to teaching children how to use the toilet,” she said.

“They just have to hand the parents a bag of wet clothes at the end of each day.”

Ms Jenner, who has a one year waiting list for her services, said she thought she’d become a flight attendant before finding her current profession.

Ms Jenner’s career has soared over the past five years and she was honoured with a Special Recognition BFIIN Award and British Female Inventor of the Year award in 2014, named Business Woman of the Year 2013, and given a New Business Woman award and Entrepreneur of the year award in 2010, according to her website.

This article originally appeared on The New York Post.