Another insect coffin!

The problem is that a low-airflow glass tubes. In them fungal spores feel, due to the humid climate, more comfortable than the insect larvae themselves. On warm days, this breed tubes can cause a high probability of heat accumulation, which additionally burdened the larvae.

Already in 1991 tested Andrea Jakubzik and Klaus Cölln a model of this observation boxes and found that just 40% of the larvae survived. Because the tubes are hardly to clean, are conserved fungal spores until the next breeding so that the hatching rate of generation to generation to zero sinkt.Dieses result obviously also applies to all similar models.

It is incomprehensible to me how the company riot, otherwise known for versatile animal welfare products, such a gaffe over long time can lead in the range.

For kindergartens and schools are likely the dead larvae in the tubes neither interesting nor provide an appetizing sight.

Alternatives for observers, provide nest boxes with tongue and Plexiglas cover that permit an equally good observation, allow a free gas exchange and thus may have a significantly higher hatching rate!