An assortment, came with frozen foodstuffs.
ALL appear to contain some sort of "Gel", rather than just water; from the feel.
One says - "Not for human consumption. Non-toxic, food safe. Contents can be rinsed down drain."
Two say. - words on recycling &/or disposal, similar to above + "Emptying the Gel around Plants will help them absorb nutrients and retain moisture".
They MAY be one step short of "Swell Gel"© which I have & have used. Yet to try these.
and two "say NOWT" I thought I'd freegle before I dispose.