A correspondent of the Journal of Horticulture, says:

"Fumigating once a fortnight the houses in which it is present is a good means to adopt for eradicating it; and we have found that syringing the plants, etc, infested with a solution of soft soap and tobacco water is also effectual if applied once a week, at a temperature of 100° to 120°. Prevention, however, is better than cure, and if the plants are kept healthy by due ventilation and abundance of moisture both in the air and soil, the insect may be usually banished".