EcoVia IB Insect Bloks contain a blend of botanical insecticide oils in a pleasantly scented block form. As the first product of its kind, EcoVia IB emits insecticidal vapors that repel insects from an area and can kill insects in smaller enclosed spaces. The vapor release is enhanced when the Bloks slowly dissolve in water, such as when placed in beverage fountain drip trays or drains. The Bloks are ideal for repelling small flies such as fruit flies from beer taps, drains and other problem areas. They can be used in conjunction with InVade Bio Bullets which provide bio sanitation of these areas. They’re also ideal to use dry for repelling ants and other insects from electrical boxes, trash cans and other smaller enclosed spaces. Like several other EcoVia brand products, the Bloks are a FIFRA 25(b) exempt product. They are available in resealable foil pouches containing 36×50 gram Bloks or 15×100 gram Bloks.