Which plants friend does not know those annoying swarms of small black mosquitoes that fly up etc. of the flowerpots in contact, Giessen. We are talking about the infamous fungus gnats, which - if allowed - increasingly a real plague. Their larvae feel particularly well in moist, humus soil. There they eat preferably on delicate plant roots, what adult plants put away easily usually. Seedlings mind this attack usually nothing to oppose. So the voracious larvae of fungus gnats can destroy an entire seed readily. As I said - if you let them. It is here come the yellow stickers, or -self into play. The mosquitoes are not chemically but purely optical lured over the yellow hue, settle on the adhesive surface and are prevented from further propagation. This type of pest control is as simple as amazingly effective. After a short time the stickers are densely covered with fungus gnats. Does incidentally also against whitefly, thrips, leafhoppers and some other pests. Conclusion: Yellow sticker and yellow panels (with heavier infestations or larger areas) have become indispensable for me and very practical aids in plant care and sowing. Highly recommended!