Abstract: Described are formulations and methods for animal pest control. A formulation for topical administration to animal pests includes a solution including an effective amount of cholecalciferol (also known as Vitamin D3) and at least one dermal penetrant or carrier, such that a lethal dose of the cholecalciferol can be delivered transdermally to an animal pest in solution, thereby being absorbed into the animal's bloodstream and subsequently causing the death of the animal. The formulation and method is effective at killing pests such as mice, rats, stoats, weasels, ferrets, rabbits, hedgehogs and possums.

Abstract: A rainwater cleaning system for a water tank comprises a pipe element having a closed end located on the floor of the tank. The pipe element also has an open end connectable to an outflow pipe from the tank. Located near the closed end of the pipe element is at least one hole. The cross sectional area of the hole preferably at least equals the cross sectional area of the pipe outflow.

Abstract: A rainwater cleaning system for a water tank comprises a pipe element having a closed end located on the floor of the tank. The pipe element also has an open end connectable to an outflow pipe from the tank. Located near the closed end of the pipe element is at least one hole. The cross sectional area of the hole preferably at least equals the cross sectional area of the pipe outflow.

Abstract: A rainwater cleaning system for a water tank comprises a pipe member having a closed end located on the floor of the tank. The pipe member also has an open end connectable to an outflow from the tank. Located near the closed end of the pipe member is at least one hole. The surface area of the hole preferably equals the surface area of the outflow.