I finally silenced my wife’s noisemaker!
I’ve purchased a variety of earplugs to muffle my wife’s white noise machine. The foam ones were mostly ineffective, cutting maybe 20% of the noise. I tried some soft moldable silicone ones that worked well for a week or so while they were a little sticky still, but then didn’t work as well. I’ve used the same pair of Mighty Plugs now for close to a month and they are still blocking 80-90% of the noise. I used them in a motel last week and could barely hear the AC. I continue to be impressed.