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Tout d'abord, il faut savoir que l'eau des éclaboussures ne provient pas des conduites d'égout de la rue mais bien des siphons (trappe d'odeur : tube recourbé en forme de « S », placés à la sortie des appareils sanitaires, de façon à empêcher la remontée des mauvaises odeurs provenant de l'égout) de vos différents appareils sanitaires (toilette, évier, drains de plancher). De plus, vous pouvez remédier rapidement à ces inconvénients en ajoutant un peu d'eau dans les siphons de vos appareils et en ventilant bien la maison. Tout reviendra à la normale.


Male C. pallida are able detect the pheromones which females release and use them to locate female burrows. When a virgin female is about to emerge from her burrow, she releases a scent that wafts up through the soil and is detected by the antenna of the males. This has led to males developing a very acute olfactory sense. Freshly-killed females have been buried to test whether sound also plays a part in male signaling. In these tests, male bees still dug up the dead females, proving that pheromone signaling is the only pathway. Males have also been observed to dig up other males. This shows that males and virgin females give off similar pheromones. Oddly, males also sometimes dig up other digger bee species. It is currently unknown why this occurs.[6]
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