We don't have a bath :'( But I put both the girls in the shower alone. Sometimes I'll start my shower with them and give them both a wash, then hop out and let them have a play etc. Other times I'll just pop them in there by themselves. I check in on them every few minutes, and our house is tiny so we can hear them no matter what room we're in. They love it They're 3.5 and 22 months.