I asked about a bottom tray in my last thread, i guess i mean " boot tray " where can i find a boot tray?
below is an excerpt from the first article.
Leachate will normally collect in the boot tray under the bin; dilute it and use on outdoor plants as you would a compost or manure tea.
I picked up a boot tray at my local hardware store for about $2. It's a simple plastic rectangle with raised edges and some surface lines for drainage. I use four upturned plastic flower-pot drain saucers to raise the bin a little higher.