Studies on dryer sheets have shown potential health problems. You can read more about that here.
There are several natural alternatives and cheaper too. Here’s a simple and effective solution.
1 6×6 piece of cotton (an old towel or t-shirt)
2 drops of orange, lavender or lemon essential oil
Drop essential oil on cloth and place in a dryer of wet clothes. Dry as normal. When cloth has lost it’s scent, simply reapply.