Refillable
On this page12
The statement
"Refillable Container. Refill this container with pesticide only. Do not reuse this container for any other purpose."
Or the narrower version
The same sentence with a common chemical name in place of the word pesticide. Which restricts the container to one substance rather than to a category.
So there is a decision inside the required text
Name the category and keep the container flexible, or name the chemical and bind it to one product. Both wordings are permitted.
The second limb is the interesting one
Do not reuse this container for any other purpose. So a refillable container is refillable with pesticide and is not a general-purpose container afterwards.
Which is narrower than refillable sounds
The permission is to refill, not to repurpose. A container that has held a pesticide is not released into general use by being refillable.
Compare the special packaging rule in the aromatherapy property
There, 16 CFR 1700.15(c) says special packaging shall not be reused at all. Here reuse is permitted and channeled.
Two schemes, two attitudes to the same question
One forbids reuse because the mechanism cannot be trusted twice. The other permits it and restricts what may go back in.
A refillable container is usually a larger format
Which is the practical reason this shelf is unlikely to be one: nothing here exceeds 120 mL and the format is a 30 mL dropper bottle.
And nothing here is designated either way
We publish no refillable or nonrefillable field, so the designation has to come from the manufacturer rather than from our product page.
And the designation travels with the container
It is set by whoever made the container rather than by whoever fills it, which is why it is a purchase attribute and not a decision a filler gets to make later.
Ask before printing
Because the sentence is different depending on the answer, and the answer is an attribute of the container you bought.