It is probably easiest to find a square of waste plastic or a square of corrugated cardboard several inches wider than the diameter of the plastic tub. After a week, remove the trap from the ground and secure the top. You can add together any replicate traps at this time. Before you mail it to us, be sure to secure the top with tape. If the plastic container will fit into a ziplock bag please enclose it.
Tops have a habit of coming off during mailing and making a terrible mess.
If you have more than one sample from more than one place, be sure to label them appropriately. If the samples are from an area with a litter layer, the litter layer must be included in addition. Samples must be placed in a ziplock sealed plastic bag. Samples need to be protected from any excessive heat or protracted time in shipping. When multiple samples are being sent, care must be taken against compaction of the soil during transit.