There are few human sounds more unsettling than the sudden and urgent shriek or gutteral wail of a small chlyd. I can't tell the difference between a "I am hungry, fussy, and want out of my cage" wail vs "I have just got my foot snagged up to my ankle in a steel storm grate" wail. Therefore, I tend to try and ignore them all, which of course is pointless. I have had to leave half filled buggies in Walmart, the grocery store, and other retail establishments in the past because of a loud, continual, and long term screamer. I honestly could not hear my own self think. If I was a moomie (which I will never be, thankfully) and MY brat started up the water works with the sound effects, I would leave wherever I was with the kyd and put it in a room and let it "CIO" (CRY IT OUT) until the little bastard was too hoarse to make an audible sound, much less wail. In the meantime, I would clean the house and run every major appliance that I possibly could in order to drown out the sound, or crank up the stereo and crack open a bottle of vino.
If no one was around, I found one that wouldn't hurt it, and I could get away with it, I would consider gagging the kyd or at the very least giving it a kiddie approved tranquilizer or maybe some cough medicine or a sippy cup laced with a half ounce of sweet liqueur. I absolutely can not tolerate the long term wailing for no apparent reason crying. If it isn't sick, hungry, wearing a shit filled diaper, or being bitten by a spider or getting pinched by a car seat, then it can STFU. I have witnessed moomies attempt to feed it; NO GO, check it's diaper; STATUS DRY, pick it up; NO SPIDERS OR PINCHIES, and it doesn't appear ill, so WHY is it STILL wailing?