265 



7. Methoprene and dimilin added to poultry feed are not effective 

 as oral larvicides. CGA 72662 in drinking water of hens is an effective 

 oral larvicide with activity continuing 3 days after cessation of 

 treatment . 



8. Methoprene is effective for up to 3 days as a topically 

 applied larvicide, and would be ideal for use in wet manure since it 

 is applied in a granular form. 



9. CGA 72662 is effective up to 35 days when applied as a topical 

 larvicide. Fly resurgence can occur within 2 weeks with the use of 

 commercially labeled organophosphorus larvicides. CGA 72662 persists 

 iong enough to give manure a chance to dry out with no immediate chance 

 of additional manure 1 iqui f i cat ion due to fly activity. 



10. Granular baits may be effective for reducing adult house fly 

 populations, but probably not as effective as contact residuals. Baits 

 kill only the flies attracted to them. A contact residual applied to 

 the rafters of a poultry house would kill all flies coming in to rest 

 for the night. 



11. Northern fowl mites can be controlled with currently labeled 

 compounds available to poultrymen. Resistance is developing to some 

 compounds in some areas of the country, but many resistance problems 

 are due to faulty application methods. Much research is needed in the 

 area of acaricide application to poultry. 



12. Synthetic pyrethroid compounds are effective acaricides with 

 long residuals. Compounds such as these are necessary to break the 

 mite life cycle especially when dealing with floor-housed chickens. 



