The DE is great in the bedding however it will not stay on the feet and it needs time to work. I like the permethrin 10% from TSc. It is labelled for goats, so no off label usage. I kills on contact and is very mild. IMO better than the pyrethrum. It needs repeating in 10-14 days, for eggs that hatch.
How long do you let the fecal set up before putting the cover on the slide and reading it?
Your shelter area is perfect for "lotting".... if you choose to do that.
The cocci count is nowhere near danger levels but after treatment you may want to consider medicated feed.
Personally I have never had a cocci preventative program or fed medicated feed. Not a big fan of "medicating". Yet this year the conditions have been like something out of a bad movie! I found oocyst on my slides

( I use McMasters), never having them show up I went a "little" over the top you could say!

I did decide (agonizing actually) to do a preventative with Di-methox. Then I started a medicated feed. Mostly because 90% of the people we know in goats in our region have lost animals this year either from cocci or barberpole. My vets kind of laughed at my numbers with the cocci but they also know how I can be

...LOL... they knew it would at least make me feel better. July 25, 2013
Current results-
*Heidi (adult) cocci- 2
*Katie (adult) cocci- 1
*Millie (adult) cocci- 6
Coco (adult) cocci-3
C-1 (11 months) cocci- 4
Naomi (5m) cocci-14
Bo-Peep (<3m) cocci-6
Mini-Mancha (4 wks) no count yet
Running Aug fecals this weekend-
As you can see the adults are no big deal... but I have always had 0. The two kids were very low but still.......
In June we had none.
We ran the medicated feed for 1 month and now we are going back to our regular feed. The fecals I have done so far look good.
Really hoping the winter isn't rain, rain, rain, again.
We don't really get the snow. We are moving the building because it is still just UGH!
My vets ( I use 3) said to do the preventative and recheck fecals in 30 days. So far so good!
A whole new experience for me. :/