Previously, there have been three commonly used ways to manage odors.
Filter
Odors are caught in a carbon or other type of filter.
![Filter-Types-Illustration-04 Filtration Animation](https://greentechenv.com/wp-content/uploads/2022/07/Filter-Types-Illustration-04.gif)
Problem: Odors will eventually escape the filter.
Encapsulate
Odors are encapsulated within a chemical.
![Encapsulate-Illustration-04](https://greentechenv.com/wp-content/uploads/2022/07/Encapsulate-Illustration-04.gif)
Problem: Odors will eventually escape the chemical.
Cover
Odors are masked by a spray or other scent.
![Scent-Illustration-01](https://greentechenv.com/wp-content/uploads/2022/07/Scent-Illustration-01.gif)