The bottles
On this page9
What is here
413 containers from 30 to 946 mL with a median of 200. 356 PET and 57 glass. 115 PET Boston rounds, 80 PET packers, 64 PET imperial bullet cosmos and 42 glass Boston rounds.
Why no opaque plastic
The archetype excludes it. A room spray is bought partly on appearance and the product is usually coloured or clear, so an opaque workshop bottle is the wrong object even where the material would work.
PET for most of it
Light, clear, cheap and unbreakable in a bathroom. For a water-based product it is the obvious default and it is 356 of the 413.
Glass where the formula or the price point asks for it
57 containers. Glass handles alcohol without question, it feels substantial, and for a gift-positioned room spray it is most of the perceived value.
Amber is available and worth considering
Fragrance degrades in light and this product is kept on windowsills. Amber glass is the conservative choice and clear is the commercial one, which is a real trade rather than an obvious answer.
The size band
30 to 250 mL is the archetype window and the median is 200. That covers a car bottle at the bottom and a room spray at the top without needing two container families.
Check the base
A spray bottle gets knocked over. A base that is stable when full and when nearly empty is worth more than it sounds, and a tall narrow bottle with a heavy sprayer on top is not it.
Cosmo bullets read as personal care
69 of them on this shelf. The tapered shape sits closer to a beauty product than a household one, which is useful for a premium linen spray and wrong for a utilitarian fabric refresher.