They're outside for the moment
You might not feel too concerned - after all it's all happening outside. But what it does mean is that the rats have now found a food source and it’s this food source that has brought them one step closer to your home. Especially handy when they are looking for a warm place to shelter for the night.
How rodent proof is your property?
What does this mean to you? Rats, mice and squirrels can fit through a much smaller gap than you may think. Sewers, drainage systems and holes left by redundant pipe work beckons to rats. In terrace housing, once rats have worked their way into the loft, they will often move from house to house via gaps in the separating walls. Food for thought.