They are very sneaky because it is not easy to see them. No room is off-limits, so you should make sure to thoroughly check them. These insects are really good in hiding.
Bed bugs have a really bad smell.
You will notice these bites from kids or people you are living with. Some people will have irritating itchiness that will not stop and thus you will know that the bites are caused by bed bugs.
It might not always mean that a bed bug bit you, the stains might be human blood.
You should look for bed bug fecal matter in your bed sheet and your mattress.
You will not be necessarily looking for the bed bug eggs. The eggs are one millimeter long and are pearl white in color. So, if you come across be bug eggs in a particular bed in your house, you have to check other rooms for the same more.
Once you see bed bug skin in your house you automatically know that there are bed bugs there. For you differentiate between the bed bug skin from other insects which might have the same features, you will want to look for a hollow translucent skin underneath of your mattress.