VISALIA, California (KFSN) -- The Visalia Recovery Center is a treatment facillity for parolee's with drug problems. They must stay clean and sober to stay at the facility, and when tests showed four were on meth, the parolee's got upset."The clients were adamant they had not taken any type of drugs and were demanding an investigation," said Damon Maurice, Visalia Police Department..The investigation relied on surveillance video from the kitchen.Two of the clients were tasked with making lunch that day and had laced the peanut butter and jelly sandwiches with methamphetamine."They brought the baggie out, obviously, mixed it with some water, heated it up in a microwave, poured it into the peanut butter for the sandwiches," said Maurice.None of the four who ate the sandwiches required medical treatment.The two suspects in the case are in jail, identified as Levi Strong, and Miguel Jimenex are charged with felonies for poisoning and violating parole.Nobody at the Visalia Recovery Center would talk to us and we were asked to leave the property."They were very upset, this is a drug recovery center if you will, these folks are trying to get back on the right path in life, get back to their families and they were very upset they had to go through this," said Maurice.Police say the amount of methamphetamine in the peanut butter was so small the residents did not realize they ingested it until they were drug tested.