House flies compress pathogen spread into seconds—from filth to food in one landing—so exclusion and sanitation beat cosmetic spraying once drains and bins harbour larvae.

Six housekeeping and exclusion steps

• Remove breeding sites—lined, lidded refuse removed before dusk.
• Maintain dry, degreased counters and grout.
• Cover plated food and refrigerate promptly.
• Use intact screens on openings.
• Deploy labelled traps discreetly—not above dining tables mid-meal.
• Brief professionals when corridors or poultry adjacency overwhelm DIY measures.

What the circular vignettes reinforce

Germ carriers, overflowing bins, contaminated snacks, unscreened windows—same categories Kerala kitchens see during mango season and buffet hosting.

Closer line: hygienic interiors start with starving larvae; adults then lack incentive to orbit your lights.