Yes Advocate / Advantage Multi is preventative of spirocerca lupi infection.

This product doesn't contain ivermectin.

Brief contact of the animal with water on one or two occasions between monthly treatments will notsignificantly reduce the efficacy of the product. However, immersion in water directly after treatment may reduce the efficacy of the product.

You don't need prescription to order this product.

You can use Preventic or Kiltix tick collar or Bayer's Advantix or may be Bravecto top it up.