ふんは片付けましょう。園内ではかならず引き綱をつけ！他人や環境に迷惑を掛けないようにしましょう。On the side of the dispenser is a handy guide on how to use a dog doo bag.  Step two is missing some sort of "hold your breath" graphic.
非常警備ボタン。警報がなる。つないで始末。So, are you supposed to call the guard if you see a dog off leash, or someone leave a pile behind?  Or will it sound automatically?
 犬を花壇に上げないでください。This is very tasteful.  I'd like to think they chose the paper stock before the flowers bloomed, and are just that talented of gardeners.