How much secondary exposure would need to occur to affect them? I put the gel on my shoulders in the mornings and often leave for work before she or the kids wake up. I rarely walk around without a shirt and don't use the gel on weekends. I usually wash my hands after application. Our kids are ages 5, 3, and 3 (twins). The only exposure that I can imagine occurs from contact with my hands (since that is how the gel is applied). Can they be affected from very infrequent incidental contact?