EPA PRODUCT When insects like roaches build up a resistance to other insecticides, a heavy-duty product needs to be used! You should use United 234 to wash away those tough bugs that just won’t go away. This water-based insecticide will not stain or leave behind any noxious fumes. It is convenient for use in cracks and crevices and will control roaches, ants, ticks, spiders, wasps and beetles for weeks.