read less 'on the internet' it is perfectly safe to delete files from an SSD. In fact if you do not delete files then there is no 'free space' and the wear is concentrated in a smaller area. Cleaning programs, that clean files and reg, are as safe to use as they are on HDDs, what you MUST NOT do is defrag an SSD.
Note that this is 'on the internet' but is perfectly safe to read.