On Aug 11, 12:45*am, Robinkae wrote:
My in-laws installed carpet in their home 30 years ago. *It was high
quality and vacuumed regularly; it still looks good. *However, they
have never had the carpet professionally cleaned in any way (either
steamed or shampooed). *We may inherit this home one day. *By then the
carpet will be 40 or more years old. *Are their any health or
cleanliness problems we should be concerned about?

My inlaws house is the same way. The house was built in '74 and the
carpet has never been professional cleaned, just vacuumed.
They always took their shoes off when they came in the house and put
on slippers. The green shag still looks like new.

Jimmie