These cups are not reliable. We have the Keurig Duo Plus and when I try to use one of these I have to twist it at least half a dozen times before the Keurig lid snaps into place. One of them never closed and I had to keep the lid closed the whole time while it was cooking. We ended up throwing it away. I know it shouldn't be like this. We also have a range of Perfect Pod cups (https://smile.amazon.com/Perfect-Pod-ECO-Save-Refillable-Integrated/dp/B07SMMH8G7/ref=psdc_13397451_t2_B07FDB59L4) and they invariably work great every time. With both types it is more than 7 months, so not sporadic.
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