Romax D Block Rat Killer – 15 Blocks


Romax D Block Rat Killer are poison bait blocks for amateur use against rats. They contain 0.0025% w/w difenacoum and are designed to be contained within a rat bait box.

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Free next working day delivery on all orders over £75

  • UK Mainland Next Day Delivery – £6.00
  • Order before 3.30pm for same day dispatch
All Major Payment Methods Accepted


The deadly blocks are shaped to ensure rats nibble the edges to eat their lethal dose fast. The blocks have a central hole for securing onto a baiting rod or spike found in all bait stations.

  • Rat Poison Block
  • Easy to Use
  • Rapid Take and Fast Acting
  • Contains difenacoum

The Romax D Blocks can be used indoors or outdoors (around buildings only) and are supplied as 15 x 20g blocks. UK Authorisation Number UK-2016-0994-0005.  Place the poison bocks within one of our secure rat bait boxes.

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How To Use

  1. The bait blocks should always be placed in a suitable rat bait box.
  2. Remove any other food that is easily available in the area, do this a few days before placing the bait boxes.
  3. Place the bait boxes in the vicinity and on a run where rat activity has been seen and out of the reach of children and pets.
  4. At the beginning check bait boxes every 2-3 days and at least weekly, refill with bait as necessary
  5. Check the area for any rat bodies and dispose of in a suitable manner.
  6. Rats don’t easily accept new objects in their territory and you may need to disguise the bait box with debris from the immediate vicinity.
  7. Use bait points of 1 block in a bait box, 10m apart, reducing to 5m in heavy infestation.
  8. If you find the bait isn’t being taken move the box to a different spot, trying to keep it on an established run.
  9. Always check manufacturer instructions before use.

Safety Data

Click here for Safety Data Sheet

Free delivery for all orders £75.00 or over (UK Mainland only).
Delivery charge for orders under £75.00 is £6.00.  Service is next working day by DPD.
Scottish Highlands 17.50. Service is 2 days by DPD.
Scottish Islands, Isle of Man, Scilly and Channel is £21.00. Service is 2 days by DPD.
Isle of Wight is £15.00. Service is 2 days by DPD.
Northern Ireland and Eire is £12.50. Service is 2 days by DPD

Orders placed Monday to Thursday before 3.45pm, or Friday before 1.45pm will be despatched that day.  Orders placed on a Friday after 2pm or over the weekend will be dispatched the following Monday, unless that Monday is a bank holiday. We do not offer Saturday delivery.  Collection is possible by arrangement.

We also deliver internationally. Please contact us for a delivery quotation price before ordering. View our full shipping policy here