I have treated for varroa mite with Formic Acid (2 pads)
Right after finishing treatment my mite count went from 23 to 15 per sample. One week I removed formic pads I tested again and there was 0 mites.
I tested another hive and likewise zero mites.
I test with alcohol wash like before. Now I wonder how could it be? Did I do everything correct? Is that normal?