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.
HEALTHY PLANTS START HERE Horticultural Oils An alternative to chemicals ;What is Horticultural Oil? There are two kinds of oil used for pest control. For a century, various oils have been used to control unwanted insects, fungi and mites on fruit trees and woody ornamentals. These oils, known as dormant oils, are heavier oils, and are applied during the winter (dormant) season only. Todayâs newer horticultural oils are lighter and more highly