Used on my 6. Month old whilst in Malaysia and she didnt get bitten once. Visited grandparents whose neighbours kids also wear these so a good sign they work if the local kids wear them too! They smell of strong citronella and my changing bag smelt for weeks after we were home but I didn't mind, as it meant a bite free daughter! Even used them on me a few times when out (mozzies usually love me out there) and I didn't get bitten either so an all round great product. I have bought these a few times now and don't leave my in laws house in Malaysia without them! Being a big fan of deet spray for me, I was so chuffed to find these worked on baby and me so I can wear too safely knowing that if daughter licks me (as 9 months old do!) I know shes safe, so I don't wear deet anymore when she's around, these are much safer, so simple to apply and such a great product! Hurrah!! The only downside is the sticker part sometimes leaves sticky residue behind but after few washes this disappears so not a big downer, I still use frequently.