They don't NEED a bath every day at that age. If you or your hubby have asthma, eczema or hayfever I wouldn't do it.
However, if you don't, a daily bath can help the routine and a better sleep. I would put very natural oils in it (I'm sure some of the ladies here have great suggestions for where you live), not baby bubble bath, as that can dry the skin out. So does just warm water...