Lost a customer to the karcher vac!! I have only been doing them about a year, but was referred it by her sister who has been done for about 10 years, and her sister pays for both.. But last time her sister said that they got the karcher vac and are just going to do their own!! It's bungalows but quite big and big conservatory. But her sister will continue her 10 years service by the professionals, so she says!