I have been using these to get my dog Brit to advice on the trail,
Richard gave me one to try last week and I must say they work very well, thank you Richard.
just ordered another two.
REUSABLE TEA LEAF STRAINER - BALL MESH - LOOSE INFUSER - STAINLESS STEEL | eBay
I reason another couple of weeks and she will have cracked it
just another tool to help you on the track.