Julie Wang 100PCS 1.18x1.18" Round Essential Oil Diffuser Locket Necklace Refill Pads Thickened Washable Absorbent (30X30MM)

I read it says random, but will I receive 10 of each of the 10 colors?

Will this fit/work in a Pure Guardian humidifier? Has anyone tried it?

I was thinking of buying these to mail out sample scents of essential oils... does the scent stay a couple days if I sealed it in like a jewelry bag?

Would this size fit a Bath & Body works scentportable for the car?