Vehicles for delivery and release of pesticide compositions are provided. In one aspect, the delivery vehicle is a capsule configured to resist release of a pesticide composition before application of the capsule at a locus where pest control is desired. The capsule is further configured to degrade following application at the locus where pest control is desired to facilitate release of the pesticide composition. In one particular but non-limiting form, the capsule includes a shell wall including a relatively high Bloom strength gelatin material and a plasticizer material, and the pesticide composition includes a fumigant such as 1,3-dichloropropene. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the description and drawings.