An easy little trick to deodorize her house for free and prevent her from smelling musty is to ventilate 15 mins a day.
Even in winter, it is an essential trick to find a good quality air without bad odors.
To save on your heating bills, remember to turn off the heating before and while you air the house.
Airing daily is a trick to saving money on air fresheners of all kinds that are expensive.
In addition air fresheners have the annoying habit of hiding bad smells instead of making them disappear...
There's no point in spending money on things that aren't effective when you can deodorize your home without spending money.