-lrb- by the way , this be David 's wife , I do not know why my account be show with he name -rrb- my third child get into everything ! sure , the rest of you out there can brag that you teach you child no , but my little guy be too curious and love to frustrate I . these lock be perfect ! he can not reach he finger in , and I can install they myself !!! -lrb- which be huge since my husband have a lot on he plate right now and the other kind of lock be a pain to install -rrb- a super nice feature be that you can put they into a unlock position when the kid be older ... I suggest these to my mom since she watch one of she grandson three time a week . she can have they in lock position when he be there and unlock position the rest of the week . the adhesive work really well . I have no need to use nail to reinforce . I make sure I let they set 24 hour before mess with they . while they be set for the first 24 hour , I put they in unlock position incase my husband forget they be there and yank the door open . I just put the key on the refrigerator . my 7 year old can reach it just fine while my 18-month-old can not . this have be the perfect solution for my family !