T.S.
I don't use any deet on anyone in my family...I always use for myself whatever the kids use, feeling if less is good for them, it's good for me, too. (I buy sunscreen that's for babies or children, too, and use it on me!)
I buy whatever I can find that is deet-free, 100% deet-free. Sometimes we have to go to camping stores to find it. This year we bought at I Goldberg.
Also, to treat mosquito bites, I use something that is kid-safe. I was at Walgreens and the same brand company had something for kids and something for adults, I think called After Bug. I asked the pharmacist and he explained why I should only us ethe kid one on my kids...had I not seen the kid-oriented one, I would have bought the other!
Have a fun trip!