Use Ortho Insect, Mite & Disease 3-in-1 Ready-to-Use to control fungal diseases and pests. This convenient, easy-to-use formula requires no mixing. Simply apply directly from the bottle as indicated in the instruction booklet and spray your plants to control insect damage, fungal disease and mites. Ortho Insect Mite & Disease 3-in-1 RTU Trigger.