The answer depends entirely on your objective, but the general principle is: the least often that still meets your information need.

Frequent camera checks disturb the deployment area, leave human scent on the approach path, and create noise. Deer and other game learn quickly — a camera location that shows regular human intrusion will see reduced activity within days.

Practical guidelines:

•        Hunting scouting: Check no more than once every 2–3 weeks during the off-season. During the two weeks before opening day, many hunters pull cameras entirely to avoid disturbance.

•        Long-term research or ranch monitoring: Monthly or seasonal checks are typical.

•        4G cellular cameras eliminate in-person checks entirely for photo review — a significant advantage on sensitive hunting properties.

When you do check: approach from downwind, minimize time at the camera, and consider using rubber gloves to avoid leaving scent on the housing. Exit via a different route than you entered.