If the carpet is left in the contaminated loungeroom, it would probably be the highest area of contamination. Your children would generally play on the floor in front of the TV, absorbing the contaminants directly. The level of contamination will determine the level of damage it will do to your child. The affects include but are not limited to extreme allergic reactions, attacking the immune system, respiratory infections/issues, asthma, and the list goes on. Behavioural issues are almost guaranteed.
Each process Dunrite Decon has in place is generally from the path of learning. Learning from instructors, other technicians, or from other companies. We all learn from those doing the right thing, also from those doing the wrong thing. It is important to know what not to do, as much as what is best to do.