The cockroach egg case (ootheca) serves as protection for the eggs inside. The female cockroach will lay the ootheca, the way they are laid will depend on the species. Some hold onto eggs until just before hatching whilst others will lay in a safe secure place.

Oriental Cockroach Ootheca

The Oriental cockroach ootheca is shaped almost like a purse. It can be anywhere around 8–12mm long and dark brown.

The ootheca will be placed in a warm protected area close to food. Once dropped, depending on conditions, it will take around 6 weeks to hatch. It can take from 6 months to 2 years from egg to adult.

German Cockroach (Ootheca)

The German cockroach ootheca is smaller in size, around 5–10mm and a lighter shade of brown. The German cockroach will hold onto the eggs until almost time to hatch, around 24–48 hours before hatching.

Between 30–40 nymphs will emerge and within 3 months will be in a full adult stage that can last around 2- 6 months.

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Norway Rat Droppings

Norway Rat (Rattus norvegicus)

These droppings are around the size of coffee beans but are in torpedo shape. As with mouse droppings, fresh droppings will be shiny and old ones dusty in colour. If you see droppings of this size in your house, seek professional advice immediately.

Comparing Rat Droppings

What rat droppings actually look like alongside coffee beans and mouse droppings:

• Rat droppings
• Coffee beans compared to rat droppings
• Rat droppings compared to mice droppings

Although in some cases the size and shape of the droppings may differ.

Conclusion

In conclusion, we can see rat droppings are much larger than mouse droppings, don’t ignore the issue if you find any evidence of rats.

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So here it is!

Mice Droppings

Mice droppings are small pellets usually black but can be brown. The size of the droppings can vary depending on the age and size of the mouse. Fresh droppings will be shiny and soft, compared to old droppings that are dull in colour and stiff.

Mouse droppings can be found spread throughout their route around your property, the size, amount and location of the droppings can sometimes be used by a professional pest control technician to determine the extent of an infestation and place of entry points.

Comparing Mice Droppings

What mice droppings actually look like alongside rice grain and rat droppings:

• Mice droppings compared to rice grain
• Mice droppings compared to rat droppings
• Coffee beans compared to rat droppings

Although in some cases the size and shape of the droppings may differ

Conclusion

In conclusion, mice droppings, once you know what they look like, are noticeably quite smaller compared to rat droppings. Although in some cases the size and colour of the droppings may differ, you should still be able to determine if you have mice or rats by assessing the size of the droppings.

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