Over weekend i bought two bottles of bleach from asda and on trying to open one of the bottles i realised my grip was not what it was and the top was unmovable, so i handed the bottle to my son only for him to fail as well, in the end to get into this bottle it required judicious use of a stanley knife and a pair of pliers to get it open.
I know why these lids are fitted however i do think that manufacturers should provide bottles or cartons which are able to be opened without the need for tools and the associated risks inherant in their deployment.
this was not an isolated incident and as i have got older i have had dificulties with these so called child proof locks on a regular basis.