This is a great question which ultimately relies on the type of active ingredient(s), how much is to be disposed of, local facility protocols, and lastly, governing guidance from the city/county/state regulations.
The first recommendation is to determine how much disinfectant product is to be disposed of, obtain the proper Safety Data Sheet (SDS) for the product, and to read the product’s label. Often the product’s SDS and label will provide direction to the end user for material disposal. The facility Environmental Health and Safety (EH&S) employee, or whoever manages waste disposal for the location, can also help guide the product’s disposal based on the variables mentioned. If no one is onsite, seek additional support from outside vendors. The fees and fines for improper disposal of any waste (chemical, solid, hazardous, non-hazardous, etc.) can be steep.