How filters work
Use Include when a product must match an option. Use Exclude when a product must not match it. Leave both unselected when you have no preference.
Three states, three meanings
Neither selected
The option has no effect. Products with or without that value remain eligible.
Include
The product must match at least one included option in that filter group.
Exclude
Any product matching the excluded option is removed, even when no options are included.
The rule within one filter group
If you include one or more options, a product must match at least one of them. Included options therefore use OR. Any excluded option then acts as a veto.
If you do not include anything, all products remain eligible until an exclusion or another filter removes them.
Examples
Show everything except one brand
No brands included; Brand A excluded
Every otherwise eligible brand can appear except Brand A.
Choose between several options
Chocolate and Vanilla included
A product can match Chocolate or Vanilla. Other flavor families do not pass this filter.
Include broadly, then remove an overlap
Chocolate included; Peanut Butter excluded
Chocolate products can appear unless they are also tagged Peanut Butter.
Leave an option neutral
Chocolate included; Vanilla neither included nor excluded
A Chocolate + Vanilla product can still appear because it matches Chocolate. Vanilla itself has no effect.
How different filter groups combine
Different groups use AND. If you include Chocolate under Flavor Family and set a maximum observed price, a product must satisfy both conditions.
A single-value field such as Brand usually has one value per product. Multi-value fields can have several values, so an exclusion may veto a product that also matches an inclusion.
Protein source describes the ingredient providing protein, such as whey, casein, or pea. Protein form describes processing or composition, such as isolate, concentrate, or blend. Product attributes contain separate claims or characteristics, such as vegan or soy free. A “soy free” claim is not treated as a protein source.
Finding a brand
Brand shows a small alphabetical window instead of the entire catalog at once. Use Previous and Next to browse, or type part of a name to search. The count shows which matching brands are currently in view.
Unknown information
Unknown means the information was not available or not publishable. Excluding a known value does not prove that products with unknown information lack that value, so Unknown remains unless you explicitly exclude it.
For example, excluding Soy removes products known to match Soy. It does not establish that products with an unknown protein source are soy-free. Verify important dietary details on the current package.
Numeric filters
Numeric filters use a minimum or maximum instead of Include and Exclude. A maximum observed price, for example, keeps products with an available observed price at or below the amount you enter. Products without that numeric value do not pass the filter.