Blenheim residents are being warned to be wary of women talking their way into houses under the pretence of using phones or toilets, following burglary complaints.

Constable Michelle Stagg said police in the past week had received three complaints relating to two females preying on elderly residents in the Springlands area.

The pair, in their 20s, talked their way inside, with one keeping the resident occupied while the other stole cash.

Police were not certain whether the events were related, but said it served as a reminder as to why residents should not let strangers into their homes.

Anyone who has been targeted by a pair of women, or with information about who they might be, was urged to contact police.