if your baby is like mine then you'll need it in a way. he hates getting his diaper changed and the warm wipes make him not scream as much.
It's not a must have but its cool . If you leave it plugged in all the time regardless of the mist option I notice it dries out the wipes .
I don't wanna get one for my baby cuz if he's used to warm wipeys at home, I feel like when we're in public and they're cold he'll scream his head off lol
I decided not to get one because a couple people I've talked to about it say it dries out the wipes. But i have no personal experience so idk lol
If your baby hates cold wipes or wakes up at every diaper change then no, u will want them to have it to get thru those midnight diaper changes.