On closer examination the dust was jumping up and down like little fleas, and I noticed that the toys and lawn furniture were also covered with them. Springtails will not damage homes or bite people. Indoors, springtails are sometimes found in damp places such as cork insulation, bathrooms, around drains, and around window moldings.
Springtails feed on algae, fungi, and decaying vegetable matter.
The best means of obtaining control indoors is to institute measures which will lower the humidity, condensate, or other moisture availability. If infestations persist, residual applications of diazinon or chlorpyrifos may be applied to surfaces where springtails occur. The application you made outdoors sounds like it worked. Keep monitoring the premises. The information given herein is supplied with the understanding that no discrimination is intended and no endorsement by the Purdue University Cooperative Extension Service is implied.