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The silicone earplugs have a noise reduction rating (NRR) of 22dB. I use these, which have a NRR rating of 33dB:

https://www.amazon.com/gp/product/B0051U7W32

I don't like using them full size because they tend to make my ear sore when worn for long periods, so I cut about 1/4" off the smaller end. I wash mine when I take a shower, so this bottle of 50 pairs has lasted nearly 10 years.

I have tinnitus caused by working in a computer room with loud blowers, and wearing ear plugs most of the time helps a lot. Good luck!

Yep, those are the ones. I roll one into a ball then push it in.

The silicone deforms to the shape of your [outer-ish] ear canal, and is a bit tacky which helps create a better seal and maintain it through the night. Cheap and worth a shot.

thanks, this is a type I never tried before