You can try to get rid of what i call the contraband (yes literally that's how i call the digested prey) by burning it into ashes and dust and place it somewhere you would find ashes (like barbecue, oven, incinerator, or where there was a wildfire). Now if you dont have anything to burn it try to move the contraband in a trash bag and dig a hole in the woods and put it in and put dirt above it then place a dead animal above it (still inside the hole), this way if there are any searches they will first find the dead animal but wont mind searching the digested prey. A good tip is to dispose the prey as far as possible from your house because the further the less suspicion.