Well …. if they're a variety of Lacewing aphid, maybe advise the farmer to take advantage of the Department of Agricultural Extension (DOAE)’s offer?
‘’Lacewings (Chrysopa sp.) can be mass-reared for use against a variety of pests. In Thailand, the Department of Agricultural Extension (DOAE) has developed rearing facilities and lacewings are made available to farmers for field release.’’http://thailand.ipm-info.org/natural_en ... ewings.htm
---The trouble is that you think you have time---
---Worry is the Interest, paid in advance, on a debt you may never owe---
---It's not what happens to you in life that is important ~ it's what you do with it ---