In the past, I didn't know how to clean a baby high chair. I didn’t even know how to pick the best high chairs for my lovely twins! But now I can call myself an experienced mom, and I will tell you some life hacks about cleaning a high chair. You have lots of choices: you can use non-toxic, safe wipes, dish detergent with hot soapy water, or a spray. Firstly, you spray it down and remove the tray, and then you wash it in the sink. If the seat is messy too, spray the seat and wipe it down. Make sure you get underneath the arms because children like to stick their fingers there. Also, wipe down the legs and the bottom thoroughly.