Here are some of the precautions or measures that need to be taken to prevent mosquitoes from coming inside your living room or house :
a) Ensure that you use natural mosquito repellents in your house such as room sprays or mosquito repellent floor cleaners.
b) Ensure that there is no standing water outside your house or even inside your house (specially near sinks).
c) Keep your air conditioner filters clean.
d) Change bed sheets regularly and keep your curtains and other upholstery clear by regular dry cleaning.
e) Dimmed lighting during night-time is suggested.
f) Ensure that there are no gaps around doors/windows to prevent mosquitoes from coming in.