Impenetrable Bottles - is there an answer?

I currently have two bottles of bleach and another of lavatory cleaner that I simply can't open. My hands have recently become stiffer than ever and can't grip the two gadgets I have bought to help me open these bottles. Has anyone found the answer to this problem? I can't go running to my neighbours whenever I need to open a bottle of bleach. I know it is possible to ask pharmacists to put tablets in containers that are easier to open, but not practicable to ask bleach and cleaner manufacturers to provide something similar.