I cut the grape in half if a big grape even in quarters, so it will be eaten straight away and they all aren't chasing 1 to get it! Then just put a pinch on the flesh bit so it sticks to it. I use the end of a teaspoon handle to put it on, mine are quite small. Make sure each hen gets a dose, not always easy. Today I gave 1 hen her dose and 1 of the others chased her and pinched it, then I wasn't sure who had what so had to dose the 2 white ones again as knew it was 1 of them!