Colleen from Arlington, Va writes
I have a drain fly infestion and flies have been coming out of my sump pump opening. I have used a gel cleaner by pouring it into the sump pump but do I need a foaming agent with it? Would it be more effective that way? And can I use the aerosol spray directly in the sump pump?
Typically for sump pumps and pits it is good to use a foaming product which would be our Invade Hot Spot or
Answer last updated on: 09/05/2016
