The short answer for a Kenyan sand boa
A Kenyan sand boa has no suitable snack treats: it is a whole-prey eater, and its treat is a rare change to a scheduled meal. An occasional rat pup in place of the usual mouse, or a mouse at the larger end of its safe size range, gives a Kenyan sand boa novelty without a new feeding day. Offer that change only once in many feeds. Between meals, this burrowing snake needs nothing from the food tub at all, however hopefully it watches from the sand.
Why this boa should rarely be treated
A Kenyan sand boa spends its life buried with only its eyes and snout at the surface, waiting for prey to wander within strike range. That ambush lifestyle burns very little energy, and captive Kenyan sand boas are notably prone to becoming overweight because meals arrive far more reliably than wild prey ever does. Treat logic therefore runs opposite to a pet that begs at a bowl: for a Kenyan sand boa, restraint is the care. An occasional varied prey item keeps feeding interest alive without shortening the gaps its slow digestion is built around.
What passes for a treat
For a Kenyan sand boa, variety stays inside the rodent family it already eats: a rat pup instead of a mouse gives a slightly different scent and shape, while a mouse offered from a new angle or position in the enclosure adds a hunting challenge. Some Kenyan sand boas respond well to a prey item warmed and wiggled to mimic a wandering rodent. Avoid chicks, eggs, and scented experiments meant for other snake species, because a Kenyan sand boa's simple rodent diet already covers its needs, and novelty for its own sake risks refusals from a snake that values routine.
How often to vary the meal
A Kenyan sand boa can have its varied treat feed once in many regular meals, with plain mice on the usual spacing in between. Adults of this species already eat at wide intervals, so even one extra unscheduled item is a significant calorie event. Never follow a refused meal with a treat item the next day to tempt a Kenyan sand boa, because that trains the snake to hold out and disrupts its rhythm; simply offer the normal prey again at the next scheduled feed. Growing juveniles should stay on plain, regular prey while they build length.
Watch-outs for a Kenyan sand boa
Judge a Kenyan sand boa by feel and shape: it should be smooth and firm, not soft and round with skin showing between the scales. A Kenyan sand boa that refuses several scheduled meals, loses weight visibly, or develops a swollen section of body needs a reptile vet rather than a more tempting treat. Also watch feeding responses, because a buried Kenyan sand boa strikes fast and blind; use tongs for every feed, treat or plain, so the snake never learns to associate an opening lid and fingers with food.
Keeping rare treats rare on paper
A Kenyan sand boa feeds so infrequently that one keeper's treat feed is easily forgotten by the next person on duty. A dated feeding record prevents a second celebration meal landing days later. With KinsLe Care Teams, whoever feeds this sand boa marks the task complete and notes the prey change, so its rare treat feed is visible to everyone at a glance.