Wrote a detailed post--IT did not POST.
What roost liquid/paste may be available in Europe to control Red Mites. Years ago, Black Leaf 40 was a dependable Red Mite killer,. painted on roost--2X and NO MITEs. OR smear the little red circle on the wall--none to go back to the birds at night!

The lady would send a product to her friend--if possible and SOON, as he is losing birds--a small flock of special breeding birds.

Appreciate any information for her, and[possibly could receive an email address in Poland.

Redcap? others? THANKS!