How to get rid of nuisance park drinkers

In the summertime the parks of London come alive.

The locals are so used to spending the majority of the year in the dark and the rain that as soon as the sun makes an appearance the hordes descend on the closest patches of grass.

Whilst great for them, it does, however, cause a few problems for the local park authorities.

One particular park had an issue with a rather enthusiastic group who would start drinking very early in the morning when the park was empty.

The park authority reps would ask them to move on but, because it was the only open and comfortable space in the local area, they would soon return.

How then to remedy this problem? Specifically, how to solve the problem cheaply and efficiently? 

Extra park reps on patrol was a no go. Too much money. 

The solution in the end was delightfully simple.

They just turned on the sprinklers an hour earlier.

Because no one wants a wet bum whilst they drank their beer.

We tend to assume that most problems require additional resources or a totally new solution to solve them.

However, it is often best to simply examine more closely the 'tools' already available.

The solution can often be found from using them in a novel way.