Rather than going out and buying water guns this summer, why not take the greener approach and use a recycled water bottle? Simply take a knife and poke a hole in the lid of the water bottle.
-Does not cost any money if you have some empty ones lying around.
-Easier to refill
-Makes the fight equal, since everyone will have the same type gun
-Wastes less water because you can easily fill in a bucket or butt it up to the faucet with out wasting
-You can still recycle the bottles after.
They do tend to deflate the more they are squeezed, but you can easier blow air in the bottle to reform the shape. Simple summer family fun with out buying some toy that will end up in a landfill, where a bottle is easily recycled.
THINK GREEN AND SAVE GREEN!