Wasps can, however, be kept away -at least far enough away so that you can eat your picnic in peace! Take an empty but unwashad jam jar and add a little water. Leave this some distance from the spot you have chosen for your picnic. Make sure that it is far enough away so that any wasps that are attracted to it do not bother you, but not so far away that they are more interested in your lunch then the jam jar! Apart from the local wildlife the weather can also help you decide whether or not your picnic will be a success. You would not be the first person whose picnic was ruined by heavy rain or blustery winds. So remember to check out your local weather report - and hope that it's accurate!