It is an antisepsis for vtussah silkworm room and barn.

1. Disinfection of egg surface of tussah silkworm: antisepsis /water ratio is 1: 11, the liquor temperature keeps at 23~25℃, soak eggs for 30 minutes.
2. Disinfection of appliance in silkworm room: clean the appliance in the room, and then spray 3% formaldehyde solution. Then close the room for 24 hours. Open the window and the eggs can be used.