Cypress spurge sap
I am worried and need your advice.
Can cypress spurge sap be harmful if you do not touch the plant itself?
Background: My son touched the sap, had no reaction, but did not wash his hands and touched a number of other things with them (his bike, chair, glass...). We had no idea the sap is toxic, learnt only later that it contains latex. Now I am worried we may have inadvertently harmed somebody else. Question: Is there a chance somebody else could be seriously harmed just by touching these objects or am I overreacting and you have to be in direct contact with the sap to have any reaction? Is the sap safe after a while (eg. It dries etc)? Thank you!
Outside United States
While the latex in spurges is toxic. (see: http://www.na.fs.fed.us/fhp/invasive_plants/weeds/cypress-spurge.pdf ); there's little chance that your son caused a chain reaction that would result in serious injury. Some folk have a reaction to the allergens in Latex - regardless of the source; however once it is dry the reaction is diminished.