Now add really warm water and fill up the bottle but leave about a 1/2" head space. Now put the spray nozzle on and shake well. It is now ready to use.
I shake it before each use and just go around my house spraying it. It is nice smelling and long lasting. The Gain scent booster costs between $4-$6 a container and it will last about 6 months. I use this spray twice a day to freshen each of my rooms and it lasts and lasts. For the price value alone, it is definitely worth making.