Fumigation- seasonal variation

Dear All,

If fumigation or fogging validation need to done/cover for seasonal variation?
Justify and provide reference guideline!!

Thanks

http://www.fao.org/docrep/X5042E/x5042E04.htm

Thanks Mr. Sajjad, for the attachement,
As it has focussed more for insects ,
Can I have reference with respect to B, A and C class area for sterile department…!!
Thanks

mean you want to know about sterile area?

Right…