I am a couple of days post-Oxalic drip (3.2% at 50ml/hive). I had high mite fall for 48 hours, moderate to 96 hours, and a pickup in rate after 4 days. Most interesting to me is at 4+ days about 25% of the mites are "pale" in color.
I haven't observed significant number of pale mites in untreated hives, those mites are a uniform shellac red color.
I assume the pale mites might be immature morphs from under sealed brood, and the pickup in number are indication that the oxalic drip has some effect under sealed brood. This contradicts the stated description of its action.
Any comment or contradictory observation on "pale mites"?