Advice please

[GFrank]

Recently saw a map of the areas with invasive mud snails in Michigan, didn't realise how bad the problem was. Any advice on how to clean my boots after wading to prevent them getting caught in the nooks and crannies (apparently shoelaces are a a common place they hide).

[EdB]

https://www.petoskeynews.com/story/news/local/gaylord/2018/10/11/help-prevent-spread-of-invasive-new-zealand-mudsnails/44407813/