can use floor grills made from wood or can have a wiremesh floor with tray underneath or can use a scrapper twice a day or use deeplitter , most fanciers are using easybed , but i like hempcore , as for lime on floor i think your refering to columbine bianco floor white mainly used for show lofts. As for traps i suggest you get one where young birds can see out of a cage you can build or buy, these are known as sputniks