In such cases the weeps consist of small-diameter plastic, clay or metal pipes extending through the wall to a layer of porous backfill. Typically, weeps are arranged to direct water which may have entered an assembly from outside back to the outside.
A few of several safe household chemicals to use are vinegar, dishwashing soap and rubbing alcohol, according to an Oregon State University Extension Service publication called Using Home Remedies to Control Garden Pests, (EC 1586). The publication, complete with photos, is available free of charge online.
Quick Answer. Effective ways to rid a garden of potato bugs include sprinkling wood ashes on the garden, physically removing bugs from the plant and smoking the bugs out with a fire. Diatomaceous earth and neem oil are also effective in eradicating these pests. Continue Reading.