Final answer:
The best method to control filth flies chemically is through the use of baits.
Step-by-step explanation:
Chemical control is one method to control filth flies.
The best method to control filth flies chemically is through the use of baits. Baits are substances that are attractive to flies and contain an insecticide. When flies consume the bait, they are exposed to the insecticide and it kills them.
Bait stations can be placed in areas where flies are present to effectively reduce their population.
Foggers are not typically used for filth fly control as they are more effective for flying insects in outdoor areas. Sanitation, while important in preventing fly infestations, is not a method of chemical control.