I treated with wazine in September of this year. (Dogs confirmed with round worms- treated all the animals.) The hens are still thin, even this year's pullets. I was thinking of adding valbazen. Do I need to retreat with the wazine this soon, or is valbazen a go? My breeds include white leghorn,cochin, new Hampshire, black jersey giant, Easter eggers. The new Hampshire, cochins, and jg have very prominent keel bones. As they should be my heaviest birds, that's who I'm judging by. Diet includes: free choice flock raiser, free choice oyster shell. I just decided to also pick up some grit. Is a water electrolyte additive a good idea?