Nowadays, time is very valuable in big
cities like London. People living there have very busy daily routines
and usually don't have much free time. They don't even have time to
clean their homes and usually postpone the domestic chores. This is
not healthy at all, because dirt builds up and might cause very
serious health problems, such as allergies or asthma. Not to mention
that domestic dust combined with a little humidity creates very good
living conditions for mould spores.
