That's my question now. For the past month our sets don't seem to last for more than one day, maybe one and a half... trying to find reasons... and possible solutions. Even though I can get in touch with our end 24/7 our next appointment is the 17th and I want to have some things clear before asking her. We have been pumping for three years now. Our son turns 6 this August and maybe now he could need a longer cannula. Any opinions or experiences on this issue? Thanks for your suggestions.