A cat flap is a door in your home that stays active while you are on holiday. With a microchip flap the security question is manageable, because only your cat's chip should open it, but the flap settings, the sitter's access, and the ordinary signs of an empty house all need arranging before you leave rather than hoping they sort themselves out.
Setting the Flap for the Trip
Choose the flap mode for the trip and set it deliberately. In-only lets your cat come back inside but not head out again, which suits a sitter who wants the cat in for the night once it returns. Locked at night, on flaps that offer a timed or manual night lock, keeps the cat indoors during the hours when roaming, fighting, and road risk run highest. Pick the mode that matches the sitter's routine, and write down what you chose so nobody guesses at the panel.
Check the battery or power before leaving, even if the flap has behaved for months. A flap with fading power can fail to read a chip, lock a cat out in bad weather, or stop latching properly, and a holiday is the worst time to discover it. Replace or charge as the flap requires, test it with your cat passing both ways, and show the sitter how the manual override works in case the cat needs to be kept in after a scare or an injury.
Confirm the chip registration details are current as part of the same check. A flap reading the chip correctly helps only if the record behind that chip reaches you at your current number while you travel.
The Sitter's Access Arrangement
Arrange the sitter's access as carefully as the cat's. Decide how the sitter gets in, whether by a key you hand over in person or another arrangement you have tested, what times they will visit, and how they will handle the flap mode you set. If the sitter needs to change the flap setting, show them how in person and write the steps beside the flap rather than relying on a message thread they must search during a visit.
Leave clear instructions for a cat who does not come in. The sitter should know where the cat usually shelters, who to call, and at what point a missing evening return becomes a same-night call to you rather than a note for morning. A neighbor aware that you are away adds a second pair of eyes on both the house and an unusually visible cat.
Keeping the House From Looking Empty
Handle the ordinary home security that a flap makes more important, because a house advertising emptiness invites attention the flap cannot answer. Keep mail and packages out of sight, asking the sitter or neighbor to bring them inside daily rather than letting them build up at the door. Leave valuables secured and out of view from windows and from the flap's line of sight into the room.
Use curtains and lighting as you would for any trip. Curtains drawn or left as they normally look, depending on your street, and lighting on a varied pattern in the evenings make the house read as lived in. Tell the sitter your choices so they do not helpfully undo them by opening everything in the morning and leaving it that way.
KinsLe's Family Sharing plan displays access arrangements and house-security tasks together, so no helper has to hunt through scattered messages.