I  have  been  using  these  for  a  long  time  in my car.  I love the different shapes that they sell in bath and body works that you can put your refills in, right  now  I  have  a  lady  bug  on  my  visor.  I  always  use  Fresh linen scent  because  it  smells  clean  and fresh, but the sweet pea smells great also.  The only things that I do not like about them is that the smell dosn't  last  very  long  and  you  have to refill them regualarly.  When they are new they smell great though.  The refills are a little expensive with  the  amount  of  times  you  have  to  refill but  its  worth  it.  I  always  get  compliements whenever anyone gets in my car at how nice it smells.  What I like about them is that you can keep  them  anywhere, it  a gym bag, in a locker, you car, anywhere that is a small enclosed space.  There not good for large areas but they are good for continuous scent. 

jessicaamundy

Lady Lake, FL