Well. I have to explain that this is my first year and I am learning quite a bit as I go. I read the instructions for the Apistan and followed them.
.............I put the strips in amongst the "brood".
The meaning is that brood have have hatched. The yougest bees has those mites and they are near brood, which is left.
This meant that I opened the hive and put the strips down, down, down into the bottom deep. A deep that is full of honey is too heavy for me to lift. So, unfortunately I need to remove two shallow supers to get down to the Apistan strips.
You should first take all honey away and put your hive in winter position. I found that you live in California, almost in tropic. You need not to be worry about your temperatures. - I know that you have frost waves there, but you do not use snow plowers? http://www.codeman.fi/photo/lumilinko.jpg
I sure don't want to create mitacide resistant mites on top of all of my other first year errors.
It is not possible for you. But you can get Elqon bees. They really kill mites and you need not use chemicals or strips.
Is it possible to remove the top shallow super ...
You should first extract the honey for human consuption, and then you give apiustans. Also you can use organic acids. Apistan is not " permitted additive" in honey.
Elgon developer Mr ERIK OSTERLUND is USA born but now lives in Sweden?http://www.beesource.com/pov/osterlund/abjmar2001.htm
I had last summer 3 Elgon -hives and mites are in low level.