My kids and their and 2 cousins went for a much-anticipated sleep over at my in-laws on Saturday night. They live minutes away and have been very active in Daniel's care since his diagnosis. Long story short, the day was filled with weird lows and then super highs--and then he was in the 300s all night despite my mother-in-law's valiant sleepless supervision and calls to me. Was 420 (but no ketones) by the time I brought him home on Sunday AM and did a site change--and he went back to 114 less than 2 hours later. The old site looked okay before I changed it--but it was obviously not! This morning, he woke up at 308 with a tummy aches and had large ketones. Luckily, there was a 2 hour delay for school because of icing--and I could monitor him after I changed his site and cleared his ketones. He's been pumping for more than a year, but I realized I have no idea what makes a site go "bad." We change it every 2 to 3 days--if I slip and let it go further--he'll start going super high. The site this weekend wasn't even that old, only a day. The one today is 2 days old. I'll sometimes notice a small scab around the infusion site--on good sites and on "bad" ones. Is that the culprit? Good news--Daniel had a great time at the sleepover and slept through all of the nocturnal BG checks (he always does). Is there any way to avoid "bad" sites? I've never had 2 go bad in a row like this--but the fact that he stabilized after changing him makes me think it was the site. Could it be over-use of the site? My niece had to stop using her butt for sites because of that. I try to move them around as much as I can on his small tushy. Could the highs be due to something else entirely?