Another small study from 2016 found that children who were raised on nonindustrial farms were less likely to develop asthma than those who were not. Gut health de la Rosa, Carlos L (2014-05-01). "Additional observations of lachryphagous butterflies and bees". Frontiers in Ecology and the Environment. 12 (4): 210. Bibcode: 2014FrEE...12..210D. doi: 10.1890/14.wb.006.

Meredith Burton. "Play in a Puddle on a Rainy Day". National Association for the Education of Young Children. a b c d e f g h i Kirby, Kayla (October 7, 2020). "Niland geyser continues to threaten Imperial County". The Desert Review. Puddles commonly form in potholes in a dirt road, or in any other space with a shallow depression and dirt. In such cases, these are sometimes referred to as mud puddles, because mud tends to form in the bottoms, resulting in dirtied wheels or boots when disturbed. Lepidoptera (butterflies and moths) are diverse in their strategies to gather liquid nutrients. Typically, mud-puddling behaviour takes place on wet soil. But even sweat on human skin may be attractive to butterflies such as species of Halpe. [5] [6] More unusual sources include blood and tears. Again, similar behaviour is not limited to the Lepidoptera, and for example, the various species of bees commonly called sweat bees are attracted to various kinds of sweat and tears, including that of humans, and other bee species have been recorded as doing so to various degrees. [7] [8]Provide some tools. Kitchen implements like plastic containers or spoons are great, as are small plastic cars or animals.

Several Apatura species are famous among lepidopterologists for being easily attracted with stinking cheese. Our favourite items to have in the mud is a metal muffin tray to make mud cakes and herbs to garnish the cakes with. We’ve learnt that mud is so much fun and every single area of the curriculum can be covered through playing in the mud pit! Keeler R. (2008). Natural playscapes: Creating outdoor play environments for the soul. Redmond: Exchange Press.Some Orthoptera– e.g. the yellow-spined bamboo locust ( Ceracris kiangsu) – are attracted to human urine, specifically to the sodium and ammonium ions in it. [15] Those Lepidoptera that are attracted to dung (e.g. Zeuxidia spp.) or carrion seem to prefer ammonium ions rather than sodium. [16] In rotting, the tissues of fruits release sugars and other organic compounds such as alcohols that result from the metabolic processes of decay organisms, used as fuel by butterflies. [17] Pivnik, K. & McNeil, J.N. (1987): Puddling in butterflies: sodium affects reproductive success in Thymelicus lineola. Physiological Entomology 12(4): 461–472.