This is a rough idea of how many wasps might be in a nest
Golf ball = 1-30 wasps
Tennis Ball = 30 - 200 wasps
Grapefruit = 200-500
Football = 500 - 1500
Basketball = 1500 - 3000
Beach Ball > 3000 - 5000
Larger than Beach ball 5000 - 50000+
Small Nest
Medium Nest
Large Nest
Huge Nest
It is not uncommon to have a number of wasp nests on your property. These can emerge over the course of the season. If additional nests are on the property they are treated at a good discounted rate subject to location, size, accessibility etc .
However, if you are unfortunately home to other wasps after the first nest has been treated - a charge will be incurred.
Queen wasps search from house to house to find a suitable spot to start construction and it is not uncommon for a queen flying past your house to pick up on the smell of a dead nest.
To help reduce the risk of secondary wasp nests wherever possible remove any old nests. Wasp nests have a smell that can attract other wasps. However, while removing the nest can reduce your risk of reinvasion there are numerous nooks and crannies wasps can start building.
A treated nest will have poison within and around it so professional wasp nest removal is advised.
While we appreciate wasps in the property can be very disconcerting there are things that you need to do to reduce the risks of them entering.
In general the proccess is very similar to that of bees and we strongly advise you to read through the section called Pests in your property and Risk reduction