We have been pumping and CGMing for quite a while, but this summer seems to be a real challenge. DS will be 8 in the fall and as a "big boy" he is sweating quite a lot more than he used to. Also the weather is worse than usual -- it has been above 90 for more than a week and will stay like that for a while. In the hot weather they spend time in the school kiddie pool every day. The result of the sweat and the pool is that the Medtronic Minimed sensor comes off every 2-3 day (instead of 7) and sometimes we have inserted a new Silhouette infusion set twice a day because it also comes off. We tried Skin-Prep by Smith&Nephew but it irritates his skin. Also tried Tegaderm Film by 3M, IV3000 by S&N and Mepore Film by a Swedish company. They don't really make a watertight seal and as water seeps in things get messed up. Any ideas? (As a temporary relief -- since the CGM sensor is not staying on in any case -- we switched back to the old Animas pump with Cleo 90 sets and they stick much better than the Silhouette, but in the long term we need the CGM as well.) Thank you.