Sorry for the lack of updates again. Like I've said, I've been taking commissions on my main account to pay for rent and food so there was less time to work on Knite. I'm almost done with all the commissions so I'll be back to daily updates soon until I have to take commissions again next month. If you haven't already, please support Knite by purchasing some Knite posters and buttons at [link] You're reading the comic for free, so if you enjoy it, please support it. The more support for Knite, the less commissions I have to take which means more frequent updates
I don't think it's a real pesticide. I believe it was mentioned in the previous chapter as the pesticide company that polluted waters and caused many still born babies. Sen's stepmother was one of those who lost her baby, I think.