Mortar bees are not a pest.
They are essentially solitary creatures. They are non-aggressive and gentle.
They are active for a few months during late spring and early summer. Holes are excavated in walls for the female to lay her eggs. The damage done is rarely serious in the short term and only soft (old) lime mortar is generally affected.
There are many species of solitary bees and wasps. Many burrow into the ground or use small holes which they ‘cap’ with a piece of leaf.
