I check the killboards and war reports in-between the monthly complete evaluations to avoid wasting donations. I couldn't miss the activity decrease in the Marmite-CFC wars. While the wars are still up, kills don't happen. According to the (inaccurate, but acceptable) war reports, on the week that started on May 3 Sunday and ended on May 9 Saturday they killed 30B CFC. On the next week 14B. On the one that ended today: 11B. This is too low to remain a donation recipient. Also looking at their killboard I had trouble finding CFC who weren't in shuttles. So today and on May 30 I send all my 12B donations to MoA, then analyze the May killboard and find a new donation recipient.
Please note that I do not say that "Marmite sucks", they weren't hired, they promised nothing. It's OK for them to not hunt CFC, just like it's OK for me to not give them donations.