I used to have the same problem in my previous house, then one day I realised that you can slide them off & took them into the laundry & scrubbed them off with soap & water or whatever you use. I hope you too can slide yours off.
It’s a good idea to have carrots, celery, beans as well as fruit in the kiddie basket, as many children don’t have access to fresh veggies, for poorer families only buy frozen.