Good morning Geraint
Unfortunately, the consumer is dependent on the people he deals with, at the buying stage and, as is usually the case, no training has been done, regards cleaning and maintenance of the products.
The emphasis is on selling the advantages and benefits, which we know, could include, ease of maintenance.
Unfortunately again , this area has been hi jacked over the past thirty years, by national companies, who sell the consumer a form of insurance / maintenance plan and the retailer gains additional revenue from these sales.
Also, the retailer is able to avoid the hassles of customer complaints, by passing them to the " maintenance provider " So they avoid the need and expense, of adding maintenance, to product knowledge, at the staff training stage.
At our level, there is very little we can do..............or is there ?