Updated October 2026.
When the bait disappears but the trap doesn’t go off, the cause is usually too much bait, a trap in the wrong spot, or a rat that is wary of new objects. Use a pea-sized dab of bait pushed into the bait cup, set the trap flat against the wall on the rat’s route, and pre-bait for two or three nights before setting it.
The 7 most common reasons
| Problem | Fix |
|---|---|
| Too much bait | Use a pea-sized amount pressed into the cup, so the rat has to work at it. |
| Trap away from the wall | Rats run along edges. Put the trap flat against the wall or fence, entry facing along it. |
| New-object shyness | Rats avoid new things. Leave the trap baited but unset for 2–3 nights, then set it. |
| Trap too small | Mouse traps don’t hold rats. Use a trap built for rats. |
| Not enough traps | Use several along the route, 2–3 m apart, not just one. |
| Human scent or moving the trap | Wear gloves and leave the trap in the same spot. |
| Other food nearby | Close bins and compost, pick up bird seed and pet food. |
How to pre-bait
- Place the trap on the route and add a small dab of peanut butter, but don’t set it.
- Check each morning. When the bait is being taken two nights in a row, add fresh bait and set the trap.
- Check daily. If nothing happens in a week, move the trap closer to fresh droppings or rub marks.
Bait ideas
Peanut butter works well. Other options are a little hazelnut spread, a smear of bacon fat, or dried fruit pressed into the cup. Use only a small amount.
The ZIVASKA Dual-Tunnel Rat Trap has a bait cup you rotate open, two entries so a rat can walk straight through along a wall, and a 24 g+ trigger sized for rats.
Safety: keep every trap out of reach of children, pets and non-target animals, check traps at least daily, and follow the instructions in the box.
Frequently asked questions
Why do rats eat the bait but not set off the trap?
Usually there is too much bait, so the rat can lick it off without pressing the trigger, or the trap isn’t on the rat’s route. Use a pea-sized dab pressed into the cup and put the trap flat against the wall.
How long does it take to catch a rat?
Sometimes the first night, but often a few days. Rats are cautious of new objects, so leaving traps baited but unset for two or three nights can help.
What is the best bait for a rat trap?
Peanut butter is the most common choice. Use a pea-sized amount pressed into the bait cup.
How many rat traps should I use?
For a backyard or garage, start with 2 to 4 traps along the route rats use, about 2 to 3 metres apart. Add more for larger areas.
ZIVASKA is a Canadian, women-owned small business in Burnaby, BC. We sell traps only and do not offer pest-control services. Free shipping across Canada; pickup in Burnaby by appointment only.