We had a baby bath and it was a total waste of money. I stopped using it after about a month with Yasin and I didn't ever use it for Imran. I found the easiest thing to do was just lie them on thier back in a few cm's of water (so it came to about their ears). They liked it better too because they could kick and splash about.
I also used to just take them into the shower with me. If DH was home I would get him to come and get the baby so I could have a bit of time on my own in the shower while he dried and dressed bubs. I used to have baths with them too but I was always a bit scared that they would poo in the bath so I would usually get DH to collect them as soon as I could so I could relax a bit.