I have seen some YouTube videos of people submerging the pigeons in borax water but below their head level. So is this technique no longer any good?I use boric acid rather than borax, at 1 teaspoon per quart/liter. Borax is slightly different and appears to be somewhat less effective at controlling mites than is boric acid. But lots of older posts here do show that other folks use Borax successfully at about 1 tablespoon (2.5 teaspoons) per gallon. Some other members sprinkle the powder on the birds instead of bathing them. Link to older topic: Borax for parasites , does it work?
Do NOT submerge pigeons in water. Don't pour water over their heads and especially not over the eyes and beak.
Treating just the bird's body is definitely sufficient to get rid of mites.
Which version? The old one with carbaryl which is no longer in use in most Sevin products since 2018, or the new one that uses a pyrethroid (synthetic pyrethrin) instead?seven dust is the best