Metro residents have another opportunity today to return cans and bottles to benefit the nonprofit Central Iowa Shelter & Services, which assists homeless adults. Droppett mobile redemption’s “Giving Trailer” will be present at Valley West Mall in West Des Moines today, June 16, from 10 a.m. to 4 p.m. to take back cans and bottles that are part of the state’s 5-cent deposit program. All proceeds will go to Central Iowa Shelter & Services. Droppett will be sponsoring additional Giving Trailer events in the Des Moines area in the coming weeks, the recycler said in a statement. In May, Droppett’s events at two locations raised more than $12,000 for CISS in a contactless, safe process.