AMBLYforce™ S (25,000/ 50,000)

Product Description

AMBLYforce™ S is the predatory mite Amblyseius swirskii, used mainly to control whitefly, with some impact on spider mite populations. This format ships as loose bulk mites in a 1-liter shaker tube, ready to tap out evenly across the canopy or into release boxes. Swirskii is a polyphagous predator that also feeds on pollen, so it can be introduced preventively and thrives in warm crops — it stays active at high temperatures between 86°F and 95°F, which makes it a workhorse in greenhouses, indoor facilities, field and row crops, interiorscapes, and gardens.

What it targets

• Greenhouse Whitefly (Trialeurodes vaporariorum)
• Tobacco Whitefly (Bemisia tabaci)
• Certain Thrips spp.
• Two-Spotted Spider Mite (Tetranychus urticae)
• Tarsonemid Mites

Crops it supports

Vegetable crops, soft fruits, ornamental crops, and hemp/cannabis — in greenhouses, indoor facilities, field and row crops, interiorscapes, and gardens.

How Amblyseius swirskii controls whitefly and thrips

Swirskii is polyphagous: it eats thrips (the first and second larval instars of western flower thrips) and whitefly (the eggs and first larval instar of greenhouse and Bemisia whitefly). Used preventively, it can control whitefly before they produce honeydew. The predator’s population builds as pest pressure increases, and it can feed on pollen — or be supplementally fed in low- or non-pollinating crops. It adapts easily to high temperatures between 86°F and 95°F.

Release Rates

Cannabis Alert: Release rate suggestions on these pages are usually not sufficient for cannabis growers. For cannabis release rates, contact us.

Release Instructions

Release timing: Release bulk mites in the early or late hours of the day of receipt. If that is not possible, avoid the hot, dry times of day.

Before release: Place the tubes on a shelf horizontally until release so the mites disperse evenly. When ready, hold the tube horizontally and gently rotate to distribute the mites, then unscrew the top, remove the filter paper, and replace the lid.

Application: Gently tap the mites out of the tube evenly onto the foliage in the area to be treated. A whirlybird-type spreader or a modified leaf-blower speeds up the process and widens the release area, and Universal Release Boxes (URBs) work well too — hang them on the plant and scoop a small amount into each. Concentrate the product at release points on or near the most heavily infested plants. Leave the tube, cap removed, in the treatment area for 24 hours so all mites can exit.

Storage: Do not cold store predatory mites for more than 8 hours; keep them in moderate humidity at 55–65°F until ready to release. Apply as soon as possible after receipt. If storage is unavoidable, hold the product around 60°F, keep humidity high, and open the box so carbon dioxide does not build up and kill the mites.

Monitoring: Check plants for decreasing populations of thrips larvae and whitefly. Scouting for predatory mite adults can be difficult, so the most reliable method is to watch for reduced pest pressure after releases. Predatory mites are fast-moving, hide in the foliage, and ambush their prey, so they are rarely found in large numbers alongside the pest.

Advisories: If used alongside Phytoseiulus persimilis, use caution. In a greenhouse with mixed mites and whiteflies, clean up honeydew deposits and excessive webbing before release. Try to maintain microclimate humidity around 70%, supplementing with misting if conditions get too dry.