What are these and how do I get rid of them ??

[oopsydoopsy]

I have a sunked bbq area in my garden which is surrounded by wooden railway sleepers. Over past few months have noticed wasp-like insects burrying their way between the sleepers and depositing piles of sawdust on the floor. There dont seem to be huge numbers of them - not like normal wasp nests but they are enough to stop me using the area.
Had council pest control out who sprayed with powder - but they are still going strong ! On closer inspection, they have slightly different markings to wasps but are still very yellow and black. Bodies are longer and flatter too.
Any ideas anyone ? I want to use my bbq !!

[webbo3]

you could look here.

http://kbsbioshots.co.uk/ant01307.htm

or here

http://www.whatsthatbug.com/sawflies.html

didnt the council tell you what they were?

Dave.

[oopsydoopsy]

Thanks Dave - No, council man was very vague. Took his �35 and disappeared rather quickly, in a cloud of powder !!

[TheWinner]

They sound like Hornets (?)
I found this website which may be of help
http://www.pesthelp.co.uk/weshop/wasps.asp

[Thunderbird+]

Most likely Sawfly or possibly horntail.

[alinic]

Maybe a wood wasp? hubby brought one home to show me and i nearly died with fright! horrible horrible things!
Hope you get rid of anyhow!

[killer shark]

hi if this is the same as what I had they are called potter bees looks like a wasp but are thinner they live in concrete wood and edges of pavments you will see them flying home usually with flies in between their legs,they are individuals they seem to bury in one hole they dont seem to share like a nest, they dont attack like wasps they are only interested in collecting food for them selves Unfortunatly the only way to eradicate them is take up the sleepers and flush them out I tried allsorts boiling water chemicals powder, /in the end I dug the area where they were and re concreted area they have not come back this year.

[oopsydoopsy]

that sounds exactly like them killer ! i have tried everything - even petrol - and they still haven't gone. We want to turn the area nto a pond so I will take your advice, i think. thanks to you and everyone for replies.

[teneonshing]

In lieu of suggesting you any kind of treatment, I would like to suggest you that you can rely on the services, provided by different pest control service providers as these agencies are well equipped and experienced as well in this field, therefore, can offer you the best services at the most competitive prices and this is the reason; why many people, to cope with these types of problems tend to avail these services. Visit the website http://www.domainpropertyinspections.com.au/ for detailed information.