Laminated cardboard strip, 1.75 mm thick (305 × 38 mm) for varroa drop monitoring on mesh floors. Use with petroleum jelly: holds the adhesive layer without absorbing it. Disposable and low-cost.
Laminated cardboard board, 305 × 38 mm and 1.75 mm thick, sold singly.
It slides into the slot of the screened bottom board, greased, to hold whatever drops through the mesh. It is the base of the natural mite drop count: the figure you use to decide whether to act or wait.
01 · MATERIAL
Laminated board is glued in layers: the surface stays closed, so it holds the jelly on top instead of drinking it, and the film keeps gripping for days. Solid board is one piece and absorbent, which is why it works soaked rather than greased. Choose wrong and you notice fast: the jelly sinks into the board and the count stops meaning anything.
| Laminated (this one) | Solid |
|---|---|
| Glued in layers · holds the grease on the surface · to be greased. | Single piece · absorbent · works soaked. |
02 · USE
This is where people slip. Liquid petroleum jelly shifts with any tilt of the hive and what has fallen floats away, so you lose both position and count. What you want is the solid, stiff kind that stays where you put it. A thin, even film is enough: piling it on holds nothing extra and makes the slot harder to clean. Leave it in for a few days, then pull it out and count.
03 · BEFORE YOU BUY
It feels like a notebook cover, only thicker: stiff enough to slide into the slot without folding, and cheap enough to throw away and fit a fresh one at every inspection.
| ✓ FITS | Standard-slot screened floors — measure yours, this one is 305 × 38 mm. |
| ⚠ NOT INCLUDED | The petroleum jelly, sold separately. |
| Material | Laminated cardboard, glued in layers |
|---|---|
| Dimensions | 305 × 38 mm |
| Thickness | 1.75 mm |
| Use | Base for the natural mite drop count, with solid petroleum jelly |
| Sold as | Single unit |
Data sheet

No: this is the non-absorbent strip. Laminated board is glued in layers and its surface is sealed: it holds petroleum jelly on top without soaking it up, and a liquid runs off and is not retained. The absorbent strips, the ones that work soaked, are the compact board strip and the cellulose strips.
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Laminated cardboard strip, 1.75 mm thick (305 × 38 mm) for varroa drop monitoring on mesh floors. Use with petroleum jelly: holds the adhesive layer without absorbing it. Disposable and low-cost.
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