Congratulations on your winning bid of Ms. Pazera's Eureka Empress and its deluxe accessories along with their original boxes. I'm unsure of the production years but an online check suggested their debut to be 1966 as a companion to the Emperor. I wonder if the model or serial would give the exact year of manufacture (in case you're interested)?
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Re: Demother
Yes, along with the increased use of polyester fabrics in the 1960s and 1970s came the decrease in woolen garments which would attract clothing moths in large numbers (albeit the larvae--not the moths--were responsible for damaging textiles). Still, the change happened gradually and therefore necessitated the availability of demothers, or vaporizers on a declining scale until the 1980s.
For those who aren't in the know ... the demother's, or vaporizer's, operation consisted of inserting moth crystals (paradichlorobenzene) in the device and connecting it to the vacuum cleaner's exhaust port. The cleaner was then set inside the closet, the closet door(s) were closed, and a rolled towel was placed between the door(s) and floor. The exhaust air of the vacuum cleaner would evaporate the crystals creating a vapor which would sink into clothing fibers and kill larvae and eggs. Hanging vaporizers were also available and worked in much the same way. Conversely, neither mothballs (paradichlorobenzene) nor moth flakes (napthalene) were used with vacuum cleaners but independently. Their potency relied on being kept in tightly-sealed areas or contain. Moth-proofing sprays for upholstery were available, as well.
Incidentally, cedar closets and chests have been another effective way to control moth populations--although with limited success. That is to say while the cedar oil may repel moths at high concentrations the lumber loses most of its oil a few years after cutting. The use of fresh cedar chips/shavings or moth-proof laundry storage bags are now recommended instead.
