Deworming sheeps

Hello yall! Im new here and really glad to have found such a forum!!

I got sheeps, no pastures. In a 6x6 shed with a 12x8 fenced yard for them.

Just got their feces tested and the worm count is very high. I read some places that they feed garlic in molasses or oil.

Any of you tried and could tell me the specifics ?

Thanks