We only have one because our mattress can be wiped down after any leaks. If DD does leak, then I wash the one cover that day and put it back on before bedtime. It wouldn't hurt to have two though, more than that is unnecessary, IMO.
Probably two is adequate for most situations. There are occasional times when babies pick up viruses and have such violent episodes of vomiting and/or diarrhea where no amount of spare bed linens is adequate.
We have one. So far that has been fine but I expect we may need to get a few more when we potty train. Our mattress does not have a wipe clean surface.
Re: How many crib mattress covers?
We have two and it works really well for us. I change the pad every time I change his sheets (about every 3 days or sooner if needed).
Probably two is adequate for most situations. There are occasional times when babies pick up viruses and have such violent episodes of vomiting and/or diarrhea where no amount of spare bed linens is adequate.
BFP #2 7/18/11 - EDD 3/29/12 - Born 3/13/12
BFP #1 4/4/11 - Natural M/C - 7w1d - 4/30/11