If the droppings look that small they are most likely from the roaches. The whole complex will need to be treated at one time I would think. All condos at the same time. If this were a house I would say to use the spray bombs and believe me that would take care of any insect...but if all the units have the problem the insects will come back again into your condo. This is what happened in my apartment. I could keep the place clean...tupperware and whatever for my food...if the other tenants don't comply it's useless. |