Thripsicide

Tartar emetic, however, has no value against scale or spider. Because its sole role is that of a thripsicide, some growers already accustomed to programs which will handle scale as well as thrips in a commercial way will be inclined to follow their former procedure unless this new material can be fitted economically into their requirements.

Phenthoate, Cidal, elsan (S - alpha - ethoxycarbonylbenzyl dimethyl phosphorothiolothionate) is a broad-spectrum scalicide/thripsicide/acaricide.

“Twelve pesticides commonly applied to citrus groves are slated for study in the project’s plots,” reports Tom S. Bellows, UC Riverside assistant entomologist. They include four acaricides (Morestan, Kelthane, Pictran, Vendex), four thripsicides (Cygon, Carzol, Orthene, Sabadilla), and four scalicides (Parathion, Supracide, Lorsban, Sevin). The first test of the thripsicides began in February at UCR.

[…]many growers in the SJV will spray multiple applications of thripsicides during the spring or summer to reduce this injury on young citrus plantings.