yes.... i have to keep them at least until the field is mown.... that tractor has already killed 2 snakes in the past few hours..... and it almost had a third....... and possibly a fith as well.... thankfully..... i caught them just seconds b4 they slithered under the wheel...... one of the 5 caught in the last 2 days was injured by the tractor.... when i caught it it appeared to have been paralized about halfway down it's body..... but now it seems fine..... moving normally.... and i think it may have just been an over reaction from him twards his own injury..... but out of the 4 adults caught ALL of them are very thin..... but i will take your advise and release all of them once the field is cleared...... (only happens every 2 years) unf..... i came too late to save a baby..... and the little guy seems to have been VERY blue..... almost puget colored..... may have been a morph but i will be back from the 31 i have now down to 4 soon...... i also rescued 12 mantids..... that tractor moves so fast..... too many are just not fast enough to escape......