A few weeks ago we had a young lady come in for a screening that recently relocated here from Florida. At that time we only found two nits on her, therefore she decided to be treated. Since she had a mild case, she purchased everything she needed to deal with her room she was staying in, "Oh" and by the way she also was sharing the room with the families 8 year old son. She scheduled her guarantee check and went home to take care of washing and disinfecting the bedding in the room she was staying in.  When returning a week later for her screening to much surprise she had a couple more nits then was found in her first treatment. She once again decided to be treated and went about her day. She then made an appointment for her guaranty check and once again we found even more nits then the first two times. We told her she really needed to have the family come in so we could check them and 

it would also allow us to offer our 14 day guarantee. She said the family was in denial and stated that they checked each other and did not have it.The moral of the story: cross pollination can become a serious problem. A simple family screening could have saved her hundreds of dollars and sleepiness nights . Needless to say she has come to the realization that getting her own place may be a cheaper solution to getting rid of the little pests once and for all. We will see what happens  when she comes back from her flight to get checked . By the way she is an airline stewardess!