can I make my own air freshener?

I have a dog, she smells even though I bathe her.

Whats the best way to make cheap air freshener, gel or heated kind, myself?

Perhaps just some open containers of scented oil or extracts. If that isn’t strong enough, pour one of them into a small jar (baby food sized), roll up something absorbant yet stiff and put it into the jar so it wicks up the liquid and creates more surface area. A very thin piece of cardboard may work.

There’s a recipe for making your own gel air fresheners here. Haven’t tried it myself but I know people who have and they say they last a good while.