They definiately can - I am dealing with this at the moment . DH is a builder and from day to day I never know where he will be working and what time he will get home. I won't lie - some nights it is crazy, and I fully expect to open the door to the police one day checking on the screaming coming from our place. There is a few different ways you can cope with the bathtime routine - some twin mums suggest giving baths on alternate nights as newborns don't need to be bathed every night, so you are only dealing with one baby at a time. Or giving baths during the day when the babies are happier, then working up to the bath then bed routine when they are a little older.

I'll just let you know what works for us, although everyone is different. Firstly, it helps to be super organised. Make sure you have towels, clothes, face washers all layed out. I also have a box with nappies, wipes etc that gets carted around the house depending on what room we are in. My girls get bathed every night because they are massive spewers and its the only way to effectively clean them properly - vomit in their ears etc (I'm not making this sound too good am I? Sorry!)
If it is a unsettled night, I will bath one of the girls in the baby bath on the kitchen bench with the other one in the bouncer close by. It generally means quick baths for both with lots of crying but it's all over and done pretty quickly. If its a happier night, then one bub will go down on the floor in front of the heater and have a bit of nudie time while I bath the other girl in our big bath with their older brother. Once the first bath is finished then I will dry DD1 and she will go on the floor for nudie time, and DD2 will go in the bath. I have everything layed out and within arms reach, including all of DS's pj's etc. Now that the girls are a little bigger I am thinking of getting a bath seat for them just to make it a little easier for my back.

There is probably heaps of different ways it can be done and I am sure some of the other twin mums will pop in with advice. To begin with, it was slightly crazy here. The girls hated their baths and there was lots of crying etc. But now they are starting to love them and love having a kick around inthe bath, especially if their big brother is in there with them.
In regards to hiring a helper - we have a 17year old neighbour and she will pop in some nights, even if it's just for half an hour and it truly is a godsend. She will cuddle one or entertain DS and it takes some of the pressure off. We dont have family close by that can help so I got really panicky when everyone kept asking "Have you got plenty of help at home?".
Good luck with everything!