Possibly adults too. I tried to find limits, but there’s many different standards. Most seem around 70 - 75 db for up to 20kHz, then wary between 85 - 110db above that, which is… quite the range.

But also, these are probably rather meant for work environments, so possibly 8h/day with ear protection. Only ICNIRP mentions limits for public, being 70db up to 20kHz and 100db up to 100kHz.

The lowest I found is quoted from USAF in this review of standards of 85db up to 40kHz.

The US Air Force retains an exposure limit of 85 dB for all frequencies from 12.5 to 40 kHz. This recommendation is based on the founding work of Acton and Skillern