There's no single universal timeframe
How long a recovery suit needs to stay on depends entirely on the procedure, the wound, and your vet's specific instructions, a spay incision, a small skin lesion, and a larger surgical site all heal on different timelines. Most straightforward soft-tissue surgeries need protection for around ten to fourteen days, roughly matching the time it takes for an incision to heal and any external stitches to be removed, but your vet's discharge instructions are the actual source of truth, not a general rule.
Why the suit needs to come off sometimes
A recovery suit isn't meant to stay on permanently during the healing period. The wound needs to be checked regularly for swelling, discharge, redness, or gaping, and a suit that's never removed can hide a developing problem until it's more serious. Most vets recommend checking the incision at least once or twice a day, which means removing the suit briefly, inspecting the site, and putting it back on if healing looks normal.
Keeping the suit clean and dry matters as much as duration
A suit that gets wet or dirty against a healing wound can cause more harm than it prevents, effectively trapping moisture and bacteria against the incision. If the suit gets wet from a spill, rain, or a dog's own licking around the edges, it should be changed for a clean, dry one rather than left on to air-dry against the wound. Having a second suit on hand for washing makes this far more manageable, especially for procedures with a longer recovery window.
Signs it's time to call your vet, not just remove the suit
Increased redness, swelling, discharge, a bad smell, or the wound reopening are reasons to contact your vet regardless of how many days into recovery you are, these aren't things a suit fixes by staying on longer. Equally, a dog that's chewing at the suit itself, seems distressed by wearing it, or manages to get it off repeatedly needs a different management plan rather than just more time in the same suit.
After the suit comes off
Even once your vet clears the wound and the suit is no longer needed, it's worth watching your dog for a few extra days for any licking or scratching at the site as the skin continues to settle. If in doubt about whether healing is complete enough to stop using the suit, it's always worth checking with your vet before removing protection early.
For procedures needing two weeks or more of coverage, plan for toileting, meals, and general comfort as part of the routine, some suits have a flap or opening for toileting, which saves repeated full removal. Keeping the suit's fabric breathable and not over-tightened matters over an extended wear period, since prolonged pressure or poor airflow can irritate the skin around the wound just as much as leaving it exposed.