Echoes

''Within the crumbling walls of the Ancient Ruins, small traces of energy can be found, never staying in one place for very long. Called echoes, they are believed to be a phenomenon resulting from some kind of anciente event. Since they are harmless, echoes are often collected by ranchers as good luck charms or used as decorations.''

Echoes appear regularly in the nooks and crannies of the Ancient Ruins, as well as from Extractors.

On the Ranch: ''Echoes can be used as decorations. Simply vac them up and shoot them anywhere you want. They'll hover in that spot until you vac them up.'' - Slimepedia

Colors
There are four colors of echoes: Red Can be found in the Ancient Ruins. Also extracted from drill and the Echo Net.

Green Can be found in the Ancient Ruins. Also extracted from apiary and the Echo Net.

Blue Can be found in the Ancient Ruins. Also extracted from pump and the Echo Net.

Gold Can be found in the Ancient Ruins, but rarer than others. Extracted from all extractors and the Echo Net, but in small amounts.

Mixing
By shooting 2 or more echoes at the same point, the colors will mix. The echoes will remain seperate items, however. Here is a table of mixing 2 colors with each other: By mixing more echoes together the color also becomes more intense, since each individual echo will cover slightly different points at a time.