First potty suggestions

Keri • "Happiness can be found even in the darkest of times ; if one only remembers to turn on the light"

We will be hopefully starting to potty train our LO soon. He is in our home plus travels to my parents while I’m working. What is the best potty we could get? Since we travel somewhere else for child care is it better to get the potty that attaches to the actual toilet or just get two of the same potties to keep in the bathroom ?